Rare pair of Mullard ECC83 long plate, goalpost getter support. Matching f91 B8F date codes. Both are in nice clean condition and test excellent; valve 1; 1.78 mA/V / 2.0 mA/V (111% / 125%) valve 2; 1.65 mA/V / 1.8 mA/V (103% / 112%)

1 ECC83 12AX7 MULLARD Long Plate HiFi Guitar Amp Vintage Vacuum Tube Code f91 B8A Balanced Test Results Tube Tested on a TV-7D/U Tester 32 is Minimum Tube Tests New 54-54 (balanced test results) PRICED TO SELL!!! Singerhouse Sound has been buying and selling vintage vacuum tubes and electronics for over 25 years. We will usually ship within 1 business day of receiving cleared payment. Please make payment within 2 days from end of auction.

MULLARD ECC83 12AX7 CV492 type F91 Valve Pair 1958 Long Plate Blackburn production matched “goal post” (getter support) Special military select quality CV492. Excellent condition — report below. Gave a full-bodied bathing of music in my RIAA Phono stage (notably bigger sound, richer and more musical than late 1970’s / 80’s production Mullards) which I no longer use, so these valves are surplus to requirements. A rare pair of classic valves in production for less than 18 months in the late 1950s. Manufactured from late 1957 until early 1959 only. The F91 design was the Mullard long plate ecc83 that immediately followed their square getter MC1. Similar to, and all the quality of the predecessor legendary MC1 valve. Some prefer the F91 for its slightly smoother upper-mid frequency range. The F91 is the only Mullard design using a halo getter which incorporates the double goalpost getter support as used in the MC1. 17mm long plates” much rarer than the later 13mm short plates. Copper plate posts. CV492 print on reverse means these were selected for high specification; the best of the Blackburn F91 production. Design and date codes: F91 B8E, &: F91 B8G manufactured at Mullard Blackburn factory in May, and July, 1958. Tested good for shorts; continuity; microphony; and emissions. No hiss, no hum, no noise, no microphonics. Condition report September 2021 and stored since (from Deco Audio specialist (aylesbury), can provide details): A: triode 1, gain 35.0db, output 45v triode 2, gain 35.2db, output 45v B: triode 1, gain 35.0db, output 45v triode 2, gain 36.0db, output 45v Advice: “book values for our machine are 35db and 50v, however given the consistency across all four triodes I suspect it is my judgement of clipping (output voltage) that is off (this is done audibly and visually and there is a tolerance within which I think this falls), so in other words they are very close if not meeting tolerance and about as close to matched halves as can reasonably be expected, with A being the best”. Only the item listed is included in this sale. I will pack carefully for safe, insured, transit. Will be sent UK Post Office First Class Signed For . (Packed Item Weight not more than 250 grams) Please contact me first if bidding from overseas to find courier service and cost. All import / other duties will be the responsibility of the purchaser. Thank you for your interest.

Listings Feedback Contact add to favorites Its been 10 years since we work for BMW fans. We offer original car parts of premium quality. Our strengths Many years of experience A wide range of parts BMW only specialization Professional help Very fast realization 30 days to return Free shipping of small items WELCOME TO OUR OFFER IN WHICH WE SELL: Contact with us! BMW G14 G15 G16 M8 F91 F92 - DECORATIVE TRIM CENTRE CONSOLE 50 JAHRE CARBON LHD LHD - for left-hand drive vehicle, Fits to models: BMW 8 G14 G15 G16 BMW M8 F91 F92 F93 Item condition: Used in very good condition, 100% legal, Original BMW, The presented photos are authentic by us. Possible shipping and transport of parts worldwide. Please ask for delivery costs before buying. We are happy to advise you on the selection of parts based on the catalog number or chassis number, VIN of the vehicle. The presented photos of the parts are authentic, made by us ATTENTION! Electronic components require coding All parts are covered by a 30-day start-up warranty PAYMENTS You can pay via PayPal or directly to our bank account. PayPal Bank Transfer DELIVERY Every day we send parcels worldwide through known courier companies. FREE and fast worldwide delivery* *Outside EU, free delivery only for small pachages See our full offer See Listings Contact Add to favorites

1 ECC83 12AX7 MULLARD Long Plate HiFi Guitar Amp Vintage Vacuum Tube Code f91 B8A Balanced Test Results Tube Tested on a TV-7D/U Tester 32 is Minimum Tube Tests New 54-54 (balanced test results) PRICED TO SELL!!! Singerhouse Sound has been buying and selling vintage vacuum tubes and electronics for over 25 years. We will usually ship within 1 business day of receiving cleared payment. Please make payment within 2 days from end of auction.

1 ECC83 12AX7 MULLARD Long Plate HiFi Guitar Amplifier Vintage Vacuum Tube Code f91 B8A Tube Tested on a TV-7D/U Tester 32 is Minimum Tube Tests New 54-54 (balanced test results) PRICED TO SELL!!! Singerhouse Sound has been buying and selling vintage vacuum tubes and electronics for over 25 years. We will usually ship within 1 business day of receiving cleared payment. Please make payment within 2 days from end of auction.

1 ECC83 12AX7 MULLARD Long Plate HiFi Guitar Amplifier Vintage Vacuum Tube Code f91 B8A Tube Tested on a TV-7D/U Tester 32 is Minimum Tube Tests New 54-54 (balanced test results) PRICED TO SELL!!! Singerhouse Sound has been buying and selling vintage vacuum tubes and electronics for over 25 years. We will usually ship within 1 business day of receiving cleared payment. Please make payment within 2 days from end of auction.

SUPER RARE EARLY MULLARD ECC83 12AX7 LONG PLATES SQUARE GETTER WITH CODE f91 B7K - BLACKBURN NOVEMBER 1957 IN BEAUTIFUL CONDITION TESTED STRONG ??AVO VCM163 TESTED READINGS TUBE 1 - Ia 1.5/1.7 gm 1.7/1.7 100% = Ia 1.2 gm 1.6 ?PLEASE MAKE PAYMENT IMMEDIATELY AS I WILL BE GOING ON HOLIDAY SHORTLY AFTERIF PAYMENT IS NOT RECEIVED IN TIME I WILL NOT BE ABLE TO SHIP UNTIL THE 15TH AUGUST - BY BIDDING ON THIS AUCTION YOU ACCEPT THESE CONDITIONS PLEASE SEE MY OTHER AUCTIONS ?

1 ECC83 12AX7 MULLARD Long Plate HiFi Guitar Amplifier Vintage Vacuum Tube Code f91 B8A Tube Tested on a TV-7D/U Tester 32 is Minimum Tube Tests New 54-54 (balanced test results) PRICED TO SELL!!! Singerhouse Sound has been buying and selling vintage vacuum tubes and electronics for over 25 years. We will usually ship within 1 business day of receiving cleared payment. Please make payment within 2 days from end of auction.

1 ECC83 12AX7 MULLARD Long Plate HiFi Guitar Amplifier Vintage Vacuum Tube Code f91 B8A Tube Tested on a TV-7D/U Tester 32 is Minimum Tube Tests New 54-54 (balanced test results) PRICED TO SELL!!! Singerhouse Sound has been buying and selling vintage vacuum tubes and electronics for over 25 years. We will usually ship within 1 business day of receiving cleared payment. Please make payment within 2 days from end of auction.

1 ECC83 12AX7 MULLARD Long Plate HiFi Guitar Amplifier Vintage Vacuum Tube Code f91 B8A Tube Tested on a TV-7D/U Tester 32 is Minimum Tube Tests New 54-54 PRICED TO SELL!!! Singerhouse Sound has been buying and selling vintage vacuum tubes and electronics for over 25 years. We will usually ship within 1 business day of receiving cleared payment. Please make payment within 2 days from end of auction.

Untitled Document 1958 Mullard Blackburn 12AX7 ECC83 Long Plate Goal Post Getter Tube, NOS, Tested, f91 You are bidding on a single 1958 Mullard Blackburn 12AX7 ECC83 Tube. This tube has long (17 mm) gray plates and a goal post halo getter. It was made in 1958 at the Mullard Blackburn factory in Great Britain. It has an f91 etched code This tube was tested on my calibrated 539C. It has been tested for shorts, gas, and transconductance. The tube tests with readings of 1500/1600. Minimum is 875. All tubes are tested on my calibrated TV-7/B or on my calibrated Hickok 539C. All of these tubes have been tested for transconductance, shorts, gas, leakage and life. All tubes meet or exceed manufacturer published specifications of transconductance (Gm) for the specified tube type. All tests are tested twice - prior to the listing and prior to shipping. I have been selling tubes on the internet since 1998 and have been working with tubes since the early 1960s. If you have not already done so, please take a moment and look at my feedback. All tubes are 100% guaranteed good on arrival. These are great tubes for your new audio gear, guitar amps and vintage stereo/audio gear. Thanks for viewing my auction. Please check out my other auctions for more audio tubes, ham radio and radio related items, and collectibles for great deals. You can add me to your list of favorite sellers by clicking here. I will ship overseas Regarding Shipping Your tubes will be well packed. All tubes are shipped in white boxes or the original boxes if available. They are than are wrapped in bubble wrap and shipped in a box. I have shipped thousands of tubes all over the world and have not yet had any arrive damaged. Payment must be received with 2 days of the auction close. Foreign bidders are welcome to bid. I will gladly combine auctions to save on shipping when possible. I have sold and shipped electronic equipment and tubes to over 73 countries. I pack items very well. See my feedback and bid with confidence!

1 ECC83 12AX7 MULLARD Long Plate HiFi Guitar Amplifier Vintage Vacuum Tube Code f91 B8A Tube Tested on a TV-7D/U Tester 32 is Minimum Tube Tests New 54-54 PRICED TO SELL!!! Singerhouse Sound has been buying and selling vintage vacuum tubes and electronics for over 25 years. We will usually ship within 1 business day of receiving cleared payment. Please make payment within 2 days from end of auction.

12AX7 ECC83 Mullard Tested Audio Amp Preamp Audio Stereo Vintage Radio Vacuum Tube See Picture Box for Test Results , Long Grey Plate , Square Getter , Cooper Post ,Tested Strong , Platinum Balanced ,Made in Gt.Britain , Blackburn Factory 1958 We combine shipping Return Free Take a good look at the pictures as they give a much better description than words can If you have any questions, please ask them before bidding Shipping charge of $5.95 to anywhere within the lower 48 United States Thanks

2 neue Riemen und Idler für AKAI Kassettenrecorder: GX-75, GX-75 MKII, GX-F71, GX-F91, GX-912 1 Flachriemen für Motorantrieb, 1 Vierkantriemen für Cassettenfach, 1 Idlergummi für Spulen Versand:National: unversicherter Brief 1,00 EUR oder Prio Brief mit Sendungsverfolgung 2,50 EURInternational: uninsured to EU 1,50 EUR or insured registered mail 5,50 EUR

1 ECC83 12AX7 MULLARD Long Plate HiFi Guitar Amplifier Vintage Vacuum Tube Code f91 B8A Tube Tested on a TV-7D/U Tester 32 is Minimum Tube Tests New 54-54 PRICED TO SELL!!! Singerhouse Sound has been buying and selling vintage vacuum tubes and electronics for over 25 years. We will usually ship within 1 business day of receiving cleared payment. Please make payment within 2 days from end of auction.

FOR YOUR CONSIDERATION IS A *RARE* 1957MULLARDECC83/12AX7AUDIO VACUUM TUBE MADE IN GT. BRITAIN DATE/MFG CODE:f91B7I(I.10.7) LONG RIBBED PLATESGOALPOST SQUARE GETTER TESTED ON SENCORE MIGHTY MITE TESTERMINIMUM GOOD = 65NEW = 100 RESULTS:108/108(TESTED AS NEW) TESTED FOR GRID LEAKAGE AND SHORTS - NO ISSUES(FUN FACT - THE SENCORE MIGHTY MITE IS SAID TO BE ONE OF THE BEST TESTERS EVER MADE FOR GRID LEAKAGE) ALSO TESTED BRIEFLY IN PREAMP WITH NO ISSUES - SOUNDED AMAZING! EBayVintage ElectronicsDisclaimer: Please carefully read thefollowing disclaimer beforeproceeding with anytransaction involving vintageelectronics on this eBaylisting. By purchasing theitem, you acknowledge thatyou have read, understood,and agreed to the terms andconditions outlined herein. Age and Condition: Vintage electronics are defined asitems that are typically 20years or older. These itemsmay show signs of wear, use,and age-related deterioration.While we strive to provideaccurate descriptions andcondition assessments, it isimportant to note that vintageelectronics may have inherentflaws, functional limitations, orrequire specializedknowledge to operate orrepair. Please consider thesefactors before making apurchase. Compatibility andFunctionality: Vintage electronics may not becompatible with moderntechnologies, software, oraccessories. It is yourresponsibility to researchand verify the compatibility ofthe item with your intendeduse or setup. We cannotguarantee the functionality,performance, or longevity ofvintage electronics due totheir age and potential wear-and-tear. Any statementsregarding functionality arebased on our best knowledgeat the time of listing. Safety Precautions: Vintage electronics may not meetcurrent safety standards orregulations. It is crucial toexercise caution and takeappropriate safety measureswhen using or operatingthese items. We stronglyadvise against modifying,altering, or attempting repairswithout proper expertise. Weshall not be held liable for anyinjuries, damages, oraccidents resulting from theuse or misuse of vintageelectronics. Limited Warranty: Unless explicitly stated otherwise inthe listing, vintage electronicsare sold as is without anywarranties or guarantees,whether expressed or implied.We make no claims regardingthe longevity, durability, orfuture functionality of theseitems. You assume all risksassociated with purchasingand using vintage electronics. Authenticity and Originality:We strive to accuratelyrepresent the authenticity andoriginality of vintageelectronics. However, due tothe age and history of theseitems, it may be challenging to verifytheir complete authenticity ororiginal components. Anystatements regardingauthenticity or originality arebased on our research andbelief, but we cannotguarantee absolute accuracy. Returns and Refunds: Our return policy, if applicable, isoutlined in the listing.Please review it carefullybefore making a purchase. Ifyou encounter any issueswith your vintage electronics,please contact us within thespecified time frame to initiatethe return process. Wereserve the right to assessthe condition of returneditems before issuing refundsor exchanges. Liability Limitation: In no event shall we be liable forany indirect, incidental,consequential, or punitivedamages arising from theuse, misuse, or inability touse vintage electronics. Ourliability, if any, shall notexceed the total amount paidby the buyer. By engaging in a transactioninvolving vintage electronicson this eBay listing, youagree to release us from anyliability arising from yourpurchase, including but notlimited to disputes with otherbuyers, manufacturers, oreBay itself. We reserve the right to modifyor update this disclaimer asneeded, without prior notice.It is your responsibility toreview the disclaimer beforeeach transaction. Shipping Statement: We offer shipping servicesthrough FedEx Ground with ahandling time of 1-3 businessdays. Please note thefollowing importantinformation regarding ourshipping and handlingprocess: Processing Time: We strive to ship items promptlywithin 1-3 business days afterreceiving cleared payment.However, please understandthat unforeseencircumstances mayoccasionally cause slightdelays. We appreciate yourpatience and understandingin such situations. Shipping Method: We utilize FedEx Ground as ourprimary shipping carrier.FedEx Ground offers reliableand traceable shippingservices within the continentalUnited States. Please notethat we may opt foralternative shipping methodsor carriers for certain items orregions, at our discretion. Shipping Cost: The shipping cost for each item iscalculated based on itsweight, dimensions,destination, and the shippingmethod chosen. Please referto the shipping calculatorprovided in the listing todetermine the applicableshipping cost for yourlocation. Additional charges,such as customs duties orimport taxes, may apply for internationalshipments. eBay Global ShippingProgram (GSP): For international buyers, weparticipate in the eBay GlobalShipping Program. The GSPsimplifies the internationalshipping process by handlingcustoms clearance andproviding end-to-end tracking.Please note thatthe GSP may imposeadditional fees or importcharges, which will bereflected in the total costdisplayed during the checkoutprocess. Tracking Information: Once your order is shipped, we willprovide you with a trackingnumber, allowing you tomonitor the progress of yourshipment. You canfind this information in the MyeBay section under yourpurchase history. Pleaseallow some time for thetracking details to be updatedby the shipping carrier. Combined Shipping: If you purchase multiple items fromus within a short timeframe,we may offer combinedshipping discounts. Thecombined shipping cost will becalculated based on the totalweight and dimensions of theitems. Please contact usbefore making payment toinquire about combinedshipping options. Shipping Restrictions: Certain items may have shippingrestrictions due to theirnature, value, or destination.It is your responsibility to ensurecompliance with anyapplicable laws, regulations,or restrictions regarding theimportation of specific itemsinto your country. Address Accuracy: To ensure successful delivery, pleaseprovide a valid and completeshipping address. We will notbe held responsiblefor undeliverable shipmentsdue to incorrect or incompleteaddresses provided by thebuyer. We strive to provide a smoothand efficient shippingexperience. However, pleaseunderstand that we cannot beheld responsible for anydelays, loss, or damages thatmay occur during transit. Ifyou encounter any issues withyour shipment, please contactus, and we will do our best toassist you in resolving thematter. Thank you for choosing us asyour eBay seller. Weappreciate your business andlook forward to serving you.

1 ECC83 12AX7 MULLARD Long Plate HiFi Guitar Amplifier Vintage Vacuum Tube Code f91 B8A Tube Tested on a TV-7D/U Tester 32 is Minimum Tube Tests New 54-54 PRICED TO SELL!!! Singerhouse Sound has been buying and selling vintage vacuum tubes and electronics for over 25 years. We will usually ship within 1 business day of receiving cleared payment. Please make payment within 2 days from end of auction.

1 ECC83 12AX7 MULLARD Long Plate HiFi Guitar Amplifier Vintage Vacuum Tube Code f91 B8A Tube Tested on a TV-7D/U Tester 32 is Minimum Tube Tests New 54-54 PRICED TO SELL!!! Singerhouse Sound has been buying and selling vintage vacuum tubes and electronics for over 25 years. We will usually ship within 1 business day of receiving cleared payment. Please make payment within 2 days from end of auction.

WELCOME TO YET ANOTHER GREAT DR-TRON AUCTION.                THIS SALE IS FOR A VINTAGE VALVE TUBE.....   Mullard ECC83 / 12AX7WHITE  PRINT. Goalpost/ Dual support, Halo GETTER. Long plates. MADE IN GREAT BRITAIN, Blackburn. Code = f 91 - B8D. 1958. VINTAGE. Perfect Balanced tube.TESTS 100%. A1 = 1.40mA. A2 = 1.35mA..... 100% = 1.2mA.FROM WORKING EQUIPMENT. Please note...... ALL MY TUBES ARE TESTED ON MY CALIBRATED ......  AVO  VCM-163 TUBE TESTER .... BEAR IN MIND ALL TUBE TESTERS GIVE SLIGHTLY DIFFERENT READINGS..... MY READINGS ARE ACCURATE AND HONEST. I  WILL SHIP THIS ITEM WORLDWIDE. PLEASE LOOK AT MY OTHER VINTAGE PARTS AUCTIONS. THANK YOU FOR TAKING TIME TO VIEW MY ITEM, AND GOOD LUCK !!!

1 ECC83 12AX7 MULLARD Long Plate HiFi Guitar Amplifier Vintage Vacuum Tube Code f91 B8A Tube Tested on a TV-7D/U Tester 32 is Minimum Tube Tests New 54-54 PRICED TO SELL!!! Singerhouse Sound has been buying and selling vintage vacuum tubes and electronics for over 25 years. We will usually ship within 1 business day of receiving cleared payment. Please make payment within 2 days from end of auction.

MULLARD ECC83 12AX7 CV492 type F91 Valve Pair 1958 Long Plate Blackburn production matched “goal post” (getter support) Special military select quality CV492. Excellent condition — report below. Gave a full-bodied bathing of music in my RIAA Phono stage (notably bigger sound, richer and more musical than late 1970’s / 80’s production Mullards) which I no longer use, so these valves are surplus to requirements. A rare pair of classic valves in production for less than 18 months in the late 1950s. Manufactured from late 1957 until early 1959 only. The F91 design was the Mullard long plate ecc83 that immediately followed their square getter MC1. Similar to, and all the quality of the predecessor legendary MC1 valve. Some prefer the F91 for its slightly smoother upper-mid frequency range. The F91 is the only Mullard design using a halo getter which incorporates the double goalpost getter support as used in the MC1. 17mm long plates” much rarer than the later 13mm short plates. Copper plate posts. CV492 print on reverse means these were selected for high specification; the best of the Blackburn F91 production. Design and date codes: F91 B8E, &: F91 B8G manufactured at Mullard Blackburn factory in May, and July, 1958. Tested good for shorts; continuity; microphony; and emissions. No hiss, no hum, no noise, no microphonics. Condition report September 2021 and stored since (from Deco Audio specialist (aylesbury), can provide details): A:triode 1, gain 35.0db, output 45vtriode 2, gain 35.2db, output 45vB:triode 1, gain 35.0db, output 45vtriode 2, gain 36.0db, output 45v Advice: “book values for our machine are 35db and 50v, however given the consistency across all four triodes I suspect it is my judgement of clipping (output voltage) that is off (this is done audibly and visually and there is a tolerance within which I think this falls), so in other words they are very close if not meeting tolerance and about as close to matched halves as can reasonably be expected, with A being the best”. Only the item listed is included in this sale. I will pack carefully for safe, insured, transit. Will be sent UK Post Office First Class Signed For . (Packed Item Weight not more than 250 grams) Please contact me first if bidding from overseas to find courier service and cost. All import / other duties will be the responsibility of the purchaser. Thank you for your interest.

Rare Mullard ECC83 / 12AX7 f91 Square Getter, Long plate, 1957 Valve/Vacuum Tube AVO Tested very strong and balanced. Date code B7I = Blackburn, September 1957. Tested on a recently calibrated AVO VCM 160 with the following results; IA GMValve 1: A1 1.3 1.8 A2 1.5 1.8 AVO NOS Specs: IA = 1.2 GM = 1.6 No leaks or shorts, shiny pins. eBay seller for over 20 years, buy with confidence - see feedback. Valve will be shipped next day, carefully packaged, tracked and insured. Please drop a note with any questions. Shipping happily combined on multiple items. For overseas purchases, please message for a shipping quote before purchasing. Dont use your amp as a circuit breaker, buy tested valves!

Mullard ECC83 F91 B8D Long Plate Halo GetterTested good on B&K tester