* * * * * * * * * * *   RCA 1C5 GT Audio Electronic Vintage Radio TV Valve HAM Vacuum NOS NIB Tube NOS NIB TESTED * * * * * * * ************************************************************************************************************ Listing and template services provided by inkFrog

* * * * * * * *ONE Sylvania 12DV7 Duo Diode Triode Detector Audio Radio Valve TESTED* * * * * * * * ********************************************************************************************** Listing and template services provided by inkFrog

One (1) 5687 Sylvania vintage vacuum tubes, made in USA, tube has black smooth plate, top O getter, tube tests: 90, 90 %Price is for all tubes pictured. We test all tubes we sell! We will combine shipping! Check out my other tubes! Tubes are tested for emission, as well as for shorts, life test and grid leakage on calibrated Sencore Mighty Mite tube tester, on scale 1-120, good quality on my Sencore starts at 70. Normal 0 false false false EN-US X-NONE X-NONE

Description. This item is one lot (4 tubes) EL34 6CA7 Matsushita Made in Japan. Grey plate , O-Getter , no original box. Used tubes .Tested good via TV7D around 50 - 52 min 60 % is 32.Tested with Output transformer 5K , V-plate 225V I plate around 62-64 mA. They have similar batched date 9A 9A . Very nice sound. # Sockets do not include. Price One lot ( 4 tubes) cost is 179.99 US$ . Shipping and Handling . S/H via Thailandpost by Thailandpost. Cost is 28 USD . Please kindly inform me before BIN , I cannot ship to some country .

  TUBE HUNTER VACUUM TUBE GEMS THESE ARE THE SPECIFICS OF THE TUBE/TUBES/PARTS FOR SALE THESE ARE THE TUBE/TUBES/PARTS FOR SALE:  MANUFACTURER:                               RCA PRODUCTION CITY:                                     JAPAN TUBE TYPE:   6RP22 DESIGNATION:                                             PREAMP TUBE YEAR:     1970 MONTH:     JULY Date code match    NO SILK SCREEN CONDITION %:                    100% MICA:    2 PLATES:    GREY GM %:     120% SINGLE/PAIR/QUAD/MULTI:     PAIR GETTER:                                                          0  GETTER                                    DATE:      07 NOS NIB. This auction is for ONE PAIR. You will receive one PAIR of these tubes. All are NOS NIB and tested by by me.   THESE TUBES ARE NOS NIB. Normal 0 false false false EN-US X-NONE X-NONE On my tester a B&K 747 tester:    Below 55 = BAD      55-65 = ?     65 -100 = Good     100-120+ = NOS   I want to see you happy with your purchase. I will never sell a tube that is below standard…… I have sold many tubes here on Ebay, and all my customers have been completely satisfied. I will work with you in good faith if there are any problems, or if you are unsatisfied in any way. I want your business now and in the future, so I assume you are the boss, and I am the employee. All tubes are tested for shorts, continuity, and emissions. I prefer PayPal. ALL CUSTOMERS PLEASE READ ALL NOTES BEFORE BUYING FROM ME !!1.  RETURNS: It is my highest desire that you are completely satisfied with your purchase from me. I will bend over backwards to make sure that you are a happy customer.If anything you buy from me is less than satisfactory, message me BEFORE you either open a case or hit the “item not as described” button.Sound quality is tremendously SUBJECTIVE. For tubes returned for noise or sound quality of any kind you pay for the shipping we refund the purchase. We refund the price of the item NOT THE SHIPPING COST. If we sent the wrong tube we will of course pay for return shipping. For any tubes that are DOA we require that you send a us a picture of the shipping box to show us the damage. We test EVERY tube sent out and none should be DOA unless broken in shipping.2.    PLEASE NOTE:  Tube silkscreen (lettering on the tubes) is VERY fragile. It can be wiped off and destroyed VERY easily. If you wipe off the silkscreen while handling the tube you diminish their value by up to 70%. DO NOT handle the tubes or hold them from the cylinder. ALWAYS hold them from the ENDS. If you are returning tubes and they are not in the same condition cosmetically I cannot give you a full refund. THIS IS VERY IMPORTANT.3.  UNLESS YOU MAKE ARRANGEMENTS WITH US BEFORE YOU PURCHASE, YOU MUST PAY FOR ITEMS PURCHASED WITHIN 2 DAYS OR A CASE WILL BE OPENED FOR AN UNPAID ITEM!!!4. TESTING: I test all tubes that I sell in one way or another, or I will state untested. I have a B&K 747 tube tester. This is a mutual conductance tester. It give a percentage value of gm for the tube under test and checks for shorts and grid emissions. I also use a Tektronix curve tracer for testing triodes. I give a number of evaluations for tubes. One evaluation is a screen shot of the tube with a high voltage applied to the plate. This helps the buyer see the linearity of the tube in question at the highest voltage the tube will see in a real circuit. The Curve tracer steps the triode through 10 gate/grid voltages starting with -10 volts and going to 0 volts. The lines show how the tube conducts throughout that range. At 0 volt the tube is at max conduction and is the top line on the display. It is easy at that point to take where that top line intersects the plate voltage, find the milliamp level and compare it to the datasheet. I give those numbers for you in the Item condition box. To further help the buyer I also include the Design values, for gm and ma readings in the table. This can then be compared to other tube sellers using inferior test methods such as Hickok,  Amplitrex, and other testers. The Tektronix curve tracer gives values within 3% of the actual value. The very best portable testers only can approach 10% accuracy.5.    Please note: The numbers given for gm are what I see on my tester. I DO NOT guarantee that you will see those numbers on your tester. I only guarantee that these tubes will test good, with no shorts, or gas, on a decent calibrated tester. I dont guarantee or imply anything else.6. VERY IMPORTANT!!! Vintage tube testers almost always, due to age, have VERY LOW HEATER VOLTAGES!!!  Every tester I have ever bought is below 6 volts when selecting 6.3 volts. They average 5.8 volts. The voltage NEEDS to be 6.3 and 12.6. You can calibrate a vintage tube tester all you want. If the heater voltage is not right, you will NEVER get the right gm value. I have customers complain that their tubes are not the same as what I see on my tester. They say they have a calibrated tube tester. I have 40 tube testers. On all of them I have an outside regulated DC power supply that feeds the tube tester the correct heater voltage.7. I dont check each and every tube for noise or tone. This is SUBJECTIVE and it is too time consuming. If you dont like the noise level or the tone we offer a hassle free refund policy.  International customers note:1. Please wait for us to invoice you for the correct amount. If you have purchased more than one item, we must calculate how much the shipping will be. Shipping will be HIGHER due to insurance and shipping methods needed for expensive item totals. If you are buying only one item this will not be an issue. 2. Under no circumstances will we state on a US customs a declared value of less than the sale price. This is an honesty issue. We are honest with everyone to the best of our ability to do so. We want you to trust that what we say is true. There cannot be that trust, if we make false statements knowingly to anyone. If your country has tariffs/taxes so high that they cause large numbers of normally honest folks to make false statements, we urge you to work for change of those laws.3 International buyers if you bought more than one item and want combined shipping it will ship in 2 days.4. And all the Angels sang because the heavenly music was playing and it was turned all the way up.Listing and template services provided by inkFrog

Mullard PM2B Vacuum Tube Valve Audio Output. Boxed. Will be carefully packed for delivery.

- Amplificateur casque à tubes Audio Valve RKV Mark 2 - Excellent état général, traces subtiles dutilisation Tubes neufs Remise en mains propres possible sur Paris

A Sylvania 6F6 Audio pentode valve. Octal base Basic AVO valve tester - tests as excellent. 92%Ratings given as percentage of maximum book value Combined postage savings always possible subject to weight and suitable packing feasibility. Must ask before any payment please.

HAVING A CLEAR OUT NOW RETIRED MAY BE OF USE TO SOMEONE,THIS IS FOR A NEW UNUSED EL82, 6P18P, 6DY5, PENTODE, SUPER RUGGED AUDIO OUTPUT VALVE. TESTED. IN THE PAST I HAVE USED THESE MANY TIMES TO REPLACE EL84 VALVES IN DANSETTE AND SIMILAR RECORD PLAYERS, AND IN MANY DIFFERENT RADIOS WITH OUT ANY PROBLEMS, THE B9A BASE PIN OUT CONNECTIONS IS THE SAME AS THE EL84, SO NO ALTERATIONS TO THE VALVE HOLDER OR WIRING . IN SOME CASES YOU CAN INCREASE THE CATHODE RESISTOR TO 270 OHMS, TO REDUCE CURRENT. EL82 SPECS HEATER VOLTS = 6.3v HEATER AMPS = 0.8 ANODE/SCREEN VOLTS = 170v ANODE I/Ma = 53ma SCREEN I/Ma = 10 Ra K ohms = 20NEG GRID VOLTS = 10v ANODE LOAD = 4000 ohms POWER OUTPUT = 4 watts ALWAYS HAPPY TO COMBINE POSTAL COSTS.

Tested on a fully restored TV7-DU, by Dan Nelson, pictures of evidence for this included in the listing. It was restored and calibrated on October 21st 2021. Tubes are tested for shorts. PC= Plate Current DC= Date Code Please note, TV7 data minimum is equal to 60%. For example, (insert model number here) min value 60. If the tube tests at minimum 60, that is equal to 60%. The number over (/) is the minimum test data result as described in the TV7 DU tube testing manual. So 60/ (min) 60 = 60% Rare set, high NOS values, same date 1. 100.5/62 PC 22.4120/62 PC 26.8 2.108.5/62 PC 24.3113/62 PC 26.6I mark all my tubes, so please dont waste your time seeking to send me back your old dead tubes. All testers read differently. I have sought to have my tester as accurate as possible. I will not be giving partial refunds because you have received different test result. All tubes will be shipped well, an example of how I pack is pictured in the listing. (obviously these tubes are not included) I wont be lying on a customs form I combine shipping. If the tubes are of significant value, the postage will be extra due to insurance.

Raytheon JRP-5654. Also known as 6AK5W. RF amplifier pentode. It is also suitable for audio use as a direct plug in replacement for the 6J1 valve and gives far superior performance when used for this. Will be carefully protected and packed for delivery.

Douk Audio X1 [2022 Upgraded] HiFi Stereo Bluetooth Valve Tube Amp - (14U) Condition is used. Unit comes by itself as shown in photos. No accessories.

Overall loop feedback design, each channel with a ECC83S tube for voltage amplification, DAN1 connects cathode follower as signal buffer to get low output resistance. 6Z4 rectifier tube is used in high pressure parts. Zu Favoriten hinzufügen Verkäufer Newsletter abonnieren Neuankömmling Endet bald Feedback anzeigen Über uns Kontaktiere uns Alle Kategorien anzeigen Zusatzartikel Digitaler Verstärker Röhrenverstärker Hi-Fi Verstärker Vorverstärker & Phono Stage Kopfhörerverstärker D/A Wandler & Audio Adapter Audio-Splitter/Umschalter Audioprozessor Musikspektrum & Uhr Plattenspieler/Turntable-Teile Chassis & Gehäuse Netzteil Audio Board & Bausatz Audio Kabel Funktechnik & Kommunikation Audio Zubehör Andere Sonstiges Zuhause Feedback Verkäufer speichern Neu gelistet Endet bald Kontaktiere uns Shop-Kategorie Zusatzartikel Digitaler Verstärker Mono Kanal 2.0 Kanal 2.1 Kanal 4.0 Kanal 5.1 Kanal Multifunktion Röhrenverstärker Hi-Fi Verstärker Vorverstärker & Phono Stage Kopfhörerverstärker D/A Wandler & Audio Adapter Audio-Splitter/Umschalter Audioprozessor Musikspektrum & Uhr Plattenspieler/Turntable-Teile Chassis & Gehäuse Netzteil Audio Board & Bausatz Audio Kabel Funktechnik & Kommunikation Audio Zubehör Andere Sonstiges Abonnieren Sie unseren Newsletter Erhalten Sie unsere E-Mail-Newsletter über neue Artikel und Sonderaktionen ! Jetzt registrieren ! Heim-Audio HiFi Stereo Röhrenvorverstärker Valve Tube Preamplifier--Defective Artikelbeschreibung Shipping from Germany, 1-3 days to most DE regions and 2-8 days to Most EU countries. Please Note: the transformer is 110V and was powered by 220V mains supply by last customer, so the power part was broken, need to be changed and repaired by yourself. Warm tips: 3PCS shuguang 12AX7 tube has been upgraded to JJ ECC83S. Introduction: Overall loop feedback design, each channel with a ECC83S tube for voltage amplification, DAN1 connects cathode follower as signal buffer to get low output resistance. 6Z4 rectifier tube is used in high pressure parts. HiFi clear sound: the treble is delicate and not harsh, the midrange is warm and the bass is full. The vocals are natural and delicate, the strings are smooth. High-end Materials: Japan ALPS27 potentiometer American CMC gold-plated RCA terminals All high-grade aluminum alloy chassis Philips, WIMA high voltage capacitor US military specification DALE resistor Japan KOA series gold plated pin tube sockets Dimensions(W*H*D): 202 * 80 * 282 mm Working voltage:110V-115V / 220V-240V Packing List: 1* Tube Preamp 3* JJ ECC83S Tube 1* Power Cord Zahlung Schnelle Lieferung Rücknahmegarantie Über uns Kontaktiere uns Zahlung Sichere und sichere Zahlung per PayPal. Schnelle Lieferung Die Artikel befinden sich in Deutschland und werden innerhalb von 1 Werktag, 1-2 Werktagen nach Deutschland und 2-8 Werktagen nach den meisten EU-Lndern versendet. Rücknahmegarantie Kostenlose Rcksendung innerhalb von 30 Tagen Wir bieten eine kostenlose Rckgabe innerhalb von 30 Tagen fr alle Artikel, die Sie bei eBay gekauft haben. Die vollstndige Rckerstattung und die Rcksendung erfolgen. Auf alle Artikel wird eine Garantie von 1 Jahr gewhrt (ausgenommen: 1. Beschdigungen oder Missbrauch durch den Menschen. 2. Audiozubehr und Verbrauchsmaterialien wie Vakuumrhren). Wenn Sie mit unseren Produkten und unserem Service zufrieden sind, hinterlassen Sie bitte einen 5-Sterne . Positives Feedback ist fr uns genauso wichtig wie unser Leben. Bitte kontaktieren Sie uns, bevor Sie ein neutrales oder negatives Feedback abgeben. Wir werden bessere Lsungen anbieten, bis Sie zufrieden sind. Über uns Douk Audio / Nobsound Studio wurde 2013 in Shenzhen, CHINA, gegrndet. Wir besitzen mehrere Marken, darunter Douk Audio / Nobsound / Little Bear usw. Als professionelles Audio-Unternehmen sind wir bestrebt, die besten Produkte zu den niedrigsten Preisen zu entwickeln und herzustellen, um HiFi erschwinglich zu machen. Wir werden keine Mhen scheuen, groartige Produkte und Dienstleistungen fr unsere Kunden anzubieten und das Hrerlebnis unserer Kunden zu verbessern. Kontaktiere uns Bitte zgern Sie nicht, uns zu kontaktieren, wenn Sie Fragen oder Kommentare zu unseren Artikeln haben. Unsere Arbeitszeit ist von Montag bis Freitag von 9.00 bis 18.00 Uhr (Pekinger Zeit). Bitte erlauben Sie uns, Ihnen zu Beginn der nchsten Woche zu antworten und keine negativen / neutralen Bewertungen oder Beschwerden whrend unseres Urlaubs zu hinterlassen. Vielen Dank fr Ihr Verstndnis und Ihre Mitarbeit. Zuhause Feedback Verkäufer speichern Neu gelistet Endet bald Kontaktiere uns

Douk Audio [New Upgraded] ST-01 PRO 200W Bluetooth Hifi Valve Amplifier Tested. Tested and working In really nice clean condition well looked after

Tested on a fully restored TV7-DU, by Dan Nelson, pictures of evidence for this included in the listing. It was restored and calibrated on October 21st 2021. Tubes are tested for shorts. PC= Plate Current DC= Date Code Please note, TV7 data minimum is equal to 60%. For example, (insert model number here) min value 60. If the tube tests at minimum 60, that is equal to 60%. The number over (/) is the minimum test data result as described in the TV7 DU tube testing manual. So 60/ (min) 60 = 60% 1. 40/25 PC 43.4 2. 39.5/25 PC 44.2 I mark all my tubes, so please dont waste your time seeking to send me back your old dead tubes. All testers read differently. I have sought to have my tester as accurate as possible. I will not be giving partial refunds because you have received different test result. All tubes will be shipped well, an example of how I pack is pictured in the listing. (obviously these tubes are not included) I wont be lying on a customs form I combine shipping. If the tubes are of significant value, the postage will be extra due to insurance. If the valves sell for significant money, additional insurance shipping charges will be applied. Combined postage available

Tested on a fully restored TV7-DU, by Dan Nelson, pictures of evidence for this included in the listing. It was restored and calibrated on October 21st 2021. Tubes are tested for shorts. PC= Plate Current DC= Date Code Please note, TV7 data minimum is equal to 60%. For example, (insert model number here) min value 60. If the tube tests at minimum 60, that is equal to 60%. The number over (/) is the minimum test data result as described in the TV7 DU tube testing manual. So 60/ (min) 60 = 60% same dates 1.95/62 PC 18100/62 PC 19.9 2.94/62 PC 18.593/62 PC 17.3 I mark all my tubes, so please dont waste your time seeking to send me back your old dead tubes. All testers read differently. I have sought to have my tester as accurate as possible. I will not be giving partial refunds because you have received different test result. All tubes will be shipped well, an example of how I pack is pictured in the listing. (obviously these tubes are not included) I wont be lying on a customs form I combine shipping. If the tubes are of significant value, the postage will be extra due to insurance.

Tested on a fully restored TV7-DU, by Dan Nelson, pictures of evidence for this included in the listing. It was restored and calibrated on October 21st 2021. Tubes are tested for shorts. PC= Plate Current DC= Date Code Please note, TV7 data minimum is equal to 60%. For example, (insert model number here) min value 60. If the tube tests at minimum 60, that is equal to 60%. The number over (/) is the minimum test data result as described in the TV7 DU tube testing manual. So 60/ (min) 60 = 60% Drifts from 30-34/25, PC 34.5 I mark all my tubes, so please dont waste your time seeking to send me back your old dead tubes. All testers read differently. I have sought to have my tester as accurate as possible. I will not be giving partial refunds because you have received different test result. All tubes will be shipped well, an example of how I pack is pictured in the listing. (obviously these tubes are not included) I wont be lying on a customs form I combine shipping. If the tubes are of significant value, the postage will be extra due to insurance. If the valves sell for significant money, additional insurance shipping charges will be applied. Combined postage available

Tested on a fully restored TV7-DU, by Dan Nelson, pictures of evidence for this included in the listing. It was restored and calibrated on October 21st 2021. Tubes are tested for shorts. PC= Plate Current DC= Date Code Please note, TV7 data minimum is equal to 60%. For example, (insert model number here) min value 60. If the tube tests at minimum 60, that is equal to 60%. The number over (/) is the minimum test data result as described in the TV7 DU tube testing manual. So 60/ (min) 60 = 60% tests strong 42.3/25 PC 42.7 I mark all my tubes, so please dont waste your time seeking to send me back your old dead tubes. All testers read differently. I have sought to have my tester as accurate as possible. I will not be giving partial refunds because you have received different test result. All tubes will be shipped well, an example of how I pack is pictured in the listing. (obviously these tubes are not included) I wont be lying on a customs form I combine shipping. If the tubes are of significant value, the postage will be extra due to insurance. If the valves sell for significant money, additional insurance shipping charges will be applied. Combined postage available

Tested on a fully restored TV7-DU, by Dan Nelson, pictures of evidence for this included in the listing. It was restored and calibrated on October 21st 2021. Tubes are tested for shorts. PC= Plate Current DC= Date Code Please note, TV7 data minimum is equal to 60%. For example, (insert model number here) min value 60. If the tube tests at minimum 60, that is equal to 60%. The number over (/) is the minimum test data result as described in the TV7 DU tube testing manual. So 60/ (min) 60 = 60% rare matched tubes, made in 1957. Also have a single 1957 for auction at the same time 46/30 PC 33 47/30 PC 32.4 I mark all my tubes, so please dont waste your time seeking to send me back your old dead tubes. All testers read differently. I have sought to have my tester as accurate as possible. I will not be giving partial refunds because you have received different test result. All tubes will be shipped well, an example of how I pack is pictured in the listing. (obviously these tubes are not included) I wont be lying on a customs form I combine shipping. If the tubes are of significant value, the postage will be extra due to insurance.

Tested on a fully restored TV7-DU, by Dan Nelson, pictures of evidence for this included in the listing. It was restored and calibrated on October 21st 2021. Tubes are tested for shorts. PC= Plate Current DC= Date Code Please note, TV7 data minimum is equal to 60%. For example, (insert model number here) min value 60. If the tube tests at minimum 60, that is equal to 60%. The number over (/) is the minimum test data result as described in the TV7 DU tube testing manual. So 60/ (min) 60 = 60% tube 1 (without sticker) 57.5/32 PC= 6.3 50.3/32 PC= 5.5 DC= B6AS tube 2 45.8/32 PC= 4.9 50.3/32 PC= 5.5 DC= 161b1h2 I mark all my tubes, so please dont waste your time seeking to send me back your old dead tubes. All testers read differently. I have sought to have my tester as accurate as possible. I will not be giving partial refunds because you have received different test result. All tubes will be shipped well, an example of how I pack is pictured in the listing. (obviously these tubes are not included) I wont be lying on a customs form I combine shipping. If the tubes are of significant value, the postage will be extra due to insurance.If the valves sell for significant money, additional insurance shipping charges will be applied. Combined postage available

Tested on a fully restored TV7-DU, by Dan Nelson, pictures of evidence for this included in the listing. It was restored and calibrated on October 21st 2021. Tubes are tested for shorts. PC= Plate Current DC= Date Code Please note, TV7 data minimum is equal to 60%. For example, (insert model number here) min value 60. If the tube tests at minimum 60, that is equal to 60%. The number over (/) is the minimum test data result as described in the TV7 DU tube testing manual. So 60/ (min) 60 = 60% rare tube, 1957, I also have a matched pair for auction at the same time 52/30 PC 41.7 I mark all my tubes, so please dont waste your time seeking to send me back your old dead tubes. All testers read differently. I have sought to have my tester as accurate as possible. I will not be giving partial refunds because you have received different test result. All tubes will be shipped well, an example of how I pack is pictured in the listing. (obviously these tubes are not included) I wont be lying on a customs form I combine shipping. If the tubes are of significant value, the postage will be extra due to insurance. If the valves sell for significant money, additional insurance shipping charges will be applied. Combined postage available

Tested on a fully restored TV7-DU, by Dan Nelson, pictures of evidence for this included in the listing. It was restored and calibrated on October 21st 2021. Tubes are tested for shorts. PC= Plate Current DC= Date Code Please note, TV7 data minimum is equal to 60%. For example, (insert model number here) min value 60. If the tube tests at minimum 60, that is equal to 60%. The number over (/) is the minimum test data result as described in the TV7 DU tube testing manual. So 60/ (min) 60 = 60% NOS testing, cant verify they are genuine nos 1. 101.4/50 PC 11.8105.9/50 PC 12.3 2.102.5/50 PC 11.899.5/50 PC 11.4 I mark all my tubes, so please dont waste your time seeking to send me back your old dead tubes. All testers read differently. I have sought to have my tester as accurate as possible. I will not be giving partial refunds because you have received different test result. All tubes will be shipped well, an example of how I pack is pictured in the listing. (obviously these tubes are not included) I wont be lying on a customs form I combine shipping. If the tubes are of significant value, the postage will be extra due to insurance. If the valves sell for significant money, additional insurance shipping charges will be applied. Combined postage available

Tested on a fully restored TV7-DU, by Dan Nelson, pictures of evidence for this included in the listing. It was restored and calibrated on October 21st 2021. Tubes are tested for shorts. PC= Plate Current DC= Date Code Please note, TV7 data minimum is equal to 60%. For example, (insert model number here) min value 60. If the tube tests at minimum 60, that is equal to 60%. The number over (/) is the minimum test data result as described in the TV7 DU tube testing manual. So 60/ (min) 60 = 60% tests well, tube guide pin has snapped 34.5/25 PC 37 I mark all my tubes, so please dont waste your time seeking to send me back your old dead tubes. All testers read differently. I have sought to have my tester as accurate as possible. I will not be giving partial refunds because you have received different test result. All tubes will be shipped well, an example of how I pack is pictured in the listing. (obviously these tubes are not included) I wont be lying on a customs form I combine shipping. If the tubes are of significant value, the postage will be extra due to insurance. If the valves sell for significant money, additional insurance shipping charges will be applied. Combined postage available

Tested on a fully restored TV7-DU, by Dan Nelson, pictures of evidence for this included in the listing. It was restored and calibrated on October 21st 2021. Tubes are tested for shorts. PC= Plate Current DC= Date Code Please note, TV7 data minimum is equal to 60%. For example, (insert model number here) min value 60. If the tube tests at minimum 60, that is equal to 60%. The number over (/) is the minimum test data result as described in the TV7 DU tube testing manual. So 60/ (min) 60 = 60% strong rare tube, cup getter 1. 52.7 PC 27.6 2. 48.7 PC 25.5 I mark all my tubes, so please dont waste your time seeking to send me back your old dead tubes. All testers read differently. I have sought to have my tester as accurate as possible. I will not be giving partial refunds because you have received different test result. All tubes will be shipped well, an example of how I pack is pictured in the listing. (obviously these tubes are not included) I wont be lying on a customs form I combine shipping. If the tubes are of significant value, the postage will be extra due to insurance. If the valves sell for significant money, additional insurance shipping charges will be applied. Combined postage available