Quad of RCA 7591A Vacuum Tubes Same Date Code ( EO ) Up for sale is a quad of Strong RCA 7591A Vacuum Tubes. I tested tubes on my TV7B/U tube tester.(Minimum is 36 for 7591A.) Brand : RCA Model : 7591A Condition : Used Date Code : EO ( 1973 ) Test Results : 63/57/57/54 As the photos show, they are in good condition. Please look at all the pictures for an over all condition, before bidding. What you see is exactly what you get. Please see the photos for condition details and judge for yourself. All items are sold in the condition shown in photos and as is condition, with no warranties. If you have any questions please email me. No returns please! Shipping to Continental United States Only (48 States). Thank You for looking, and good luck with your bids!!!

I have 1 Excellent strong sylvania 7591a tube labeled for fisher .This tube test 65 where 36 is the minimum good and new tubes test 66 to 68 on are tv7 tube tester.

SYLVANIA 7591A MARK : ah ANUTESTED WITH HICKOK 800A WORKING VG SHAPE

LOT OF 4 - REALISTIC INTERNATIONAL - 7591A - VACUUM TUBES - TESTED3 IN ORIGINAL BOX1 NO BOX2 MADE IN JAPAN2 MADE IN USATHREE TUBES TEST = 80 / 361 TUBE TEST = 64 / 36TUBES ARE TESTED USING A TV-7D/U CALIBRATED TUBE TESTER. SELLER PAYS DOMESTIC SHIPPING - Shipped with USPS First ClassSHIPPING ADDRESS LISTED IN EBAY WILL NOT BE CHANGED BUYER PAYS ALL INTERNATIONAL SHIPPING FOR INTERNATIONAL SHIPMENTS, ACTUAL PRICE PAID FOR THE TUBE WILL BE INCLUDED ON CUSTOMS FORMS PLEASE BE SURE TO CHECK OUT MY OTHER AUCTIONS. I HAVE A LARGE INVENTORY OF VACUUM TUBES AND WILL BE LISTING NEW AUCTIONS ON A REGULAR BASIS.

I have 1 Excellent Very nice very strong Rca 7591a tube .This tube test 62 where 36 is the minimum good and new tubes test 66 to 68 on are tv7 tube tester.

Pair of Hammond Branded Sylvania 7591a that test good and evenly balanced with no grid shorts on basic mercury 1100 emission tester.

I have 2 Excellent strong super nice westinghouse 7591a / 7591 tubes labeled for westinghouse.

I have 6 very strong tv7 tested 7591a tubes.

Auction for only 2 GE 7591A tube tested 52 50 /36 36=60% new.please take a look for all good pictures. I do this for living.I know How to packed.Maybe you will pay little Bid more .But I m sure you will be more than happy to pay.You know why. Because u will receive your item in one piece. Shipping International US 45.00 has to declare costume at your country.

One pair of 7591A Electro-harmonix Valves/Tubes. These have never been used,they were spares for a Roland Bolt 30 watt amplifier. The amplifier was sold some years years ago, so unfortunately I cant test them.

Used Hammond Organ doners from same amp

You are bidding on (5) NOS NIB to Strong 7591s + (1) Free Extra Audio Tubes, I Combine Shipping! Thanks and Good luck bidding. *We can ship for a cheaper price first class international, just ask when you win the item. Usually it is about half of what priority is. We like Priority because of how reliable it is.

You are bidding on (5) NOS NIB to Strong 7591s + (1) Free Extra Audio Tubes, I Combine Shipping! Thanks and Good luck bidding. *We can ship for a cheaper price first class international, just ask when you win the item. Usually it is about half of what priority is. We like Priority because of how reliable it is.

I have 1 new in the box rca 7591a tube.This tube test 102 where 70 is the minimum good and new tubes test 100 on my sencore tc-162 tube tester.I have tested this tube for shorts grid leakage gas life etc.

PAIR HAMMOND PRE OWNED 7591A VACUUM TUBES TEST STRONG. WE USUALLY SHIP WITHIN 10 BUISNESS DAYS. (NO WEEKENDS) PLEASE SEE YOUR ESTIMATED DELIVERY DATE.

Vintage 1960 Sylvania USA Hammond 7591A Vacuum Tube. Branded as Hammond but with Sylvania USA manufacturing code (312). Manufactured the 13th week of 1960. Although it’s used it tested well above minimum new spec (56) on my TV-7. This tested at 68. As you may know, organ tubes were selected for their low noise floor so this is one of the best. Guaranteed good. Returns accepted. No box. Thanks!

PAIR HAMMOND PRE OWNED 7591A VACUUM TUBES TEST STRONG. WE USUALLY SHIP WITHIN 10 BUISNESS DAYS. (NO WEEKENDS) PLEASE SEE YOUR ESTIMATED DELIVERY DATE.

I have 1 Excellent strong Rca 7591a tube.This tube test 64 where 36 is minimum good and new tubes test 66 to 68 on my tv7 tube tester

Two, new in box, Tung Sol 7591 tubes. These are obviously, vintage, US made Tung Sol brand tubes and not the modern day, Russian made, re-issue/reproduction Tung Sol tubes. While the tubes are branded Tung Sol (USA), they were actually manufactured by Westinghouse, the originator of the 7591 tube type. This is evidenced by inspection of the structure and most importantly, by the etched 7591 designator at the top of the bulb and the unique, Westinghouse only, dot matrix date code. Grey plates, halo getter. Tested on a Hickok TV-3 military tester that has been calibrated, just to make sure. Firm bases, excellent silvering. Tubes are matched for dynamic gain and structure, testing at 8250, 8250 where pass/fail is 4250 micromho. The have the same structure inside and out, having printed date codes of 322NR3 and 322NB3, early and late in 1960. Many other lots of tubes for sale this week. Shipping is free within the continental US. Elsewhere- exact postage only, no packing fee.

I have 1 Rare excellent westinghouse 7591a / 7591 tube .This tube test 50 where 36 is the minimum good and new tubes test 66 to 68 on are calibrated tv7d/u tube tester.

I have 2 Rare excellent westinghouse 7591a / 7591 tubes .These tubes test 58 and 58 where 36 is the minimum good and new tubes test 66 to 68 on are calibrated tv7d/u tube tester.

I have 1 excellent westinghouse 7591a tube labeled for Lowery organs .This tube test 61 where 36 is the minimum good and new tubes test 66 to 68 on are calibrated tv7d/u tube tester.

I have 1 excellent sylvania 7591a tube labeled for Fisher .This tube test 65 where 36 is the minimum good and new tubes test 66 to 68 on are calibrated tv7d/u tube tester.

1955TESTED NEW / NOS / NIBTHE FISHER BRAND TUBE ( BY SYLVANIA - Manufacture/Date Code=312/526)7591 / 7591A TUBE (for Eico McIntosh Fisher Scott) Audio Tube AMP Amplifier TV-7/u Tested Priced to sell! Good MEASUREMENTS across all 6 Tv-7/u Tube testers!!!! Tested to be in guaranteed working conditionI tested these on a High Quality Professonal Military Calibrated Hickok TV-7/U Testers: TUBEs TEST RESULTs: TUBE: 72 - {Minimum Rating of 36 for TV-7 Testers are equal to 65% of average new ratings.} *** I WILL COMBINE SHIPPING COSTs ON MY ITEMS FOR SALE - SAVE BIG $$ !!! If you have Questions or Comments contact me on eBay Check out the photos! TESTED WITH a (TV-7/U) FOR GAS, SHORTS, AND MUTUAL CONDUCTANCE AND ARE MOSTLY STRONG TUBES! I Combine ShippingBefore You Pay. I accept PayPal and Postal M O.Please see click to enlarge photos for condition and quality.Check out My Other Items For Sale!WILL BE SHIPPED OUT FAST! Before bidding please read my shipping and return policy. I WILL COMBINE SHIPPING COST ON MY ITEMS!!! NOTE: International buyers - THE BUYER IS RESPONSIBLE FOR SHIPPING FEES. INTERNATIONAL BIDS WELCOME. I WONT CHANGE DECLARED VALUE ON CUSTOM FORMS AND INTERNATIONAL BUYERS ARE RESPONSIBLE FOR ALL TAXES, CUSTOM FEES, and additional shipping fees. ANY RETURN WILL BE ACCEPTED BUT BUYER WILL PAY SHIPPING FEES AND I WILL NOT REFUND ANY SHIPPING FEES.*TESTED ON Calibrated HICKOK TV-7 B/U*{Minimum Ratings for TV-7 Testers are equal to 65% of average new ratings.}ALL tubes will be ran through a Daniel Nelson calibrated HICKOK TV-7 B/U for a full mutual conductance test. This is a world class tester that is calibrated by the Hickok doctor. Its test results are dead on and you can buy with confidence. If you want to know what the exact Gm rating of the tube is please message me. My Return Policy: Will not accept returns for reasons such as ordered the wrong item, change mind, not what I thought It was, wrong color ordered, item ordered.