Sylvania 7591A Vacuum Tube Coin Base Up for sale is a Strong Sylvania 7591A Vacuum Tube. I tested tubes on my TV7B/U tube tester.(Minimum is 36 for 7591A.) Brand : Sylvania Model : 7591A Condition : Used Date Code : el AOY Test Results : 58 As the photos show, this is 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

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

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!

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.

I have 1 Excellent Sounding sylvania 7591a tube.This tube test 43 where 36 is the minimum good on my 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.

SYLVANIA 7591A TUBE. Emissions at 103 on Sencore tube tester. No shorts. Grid leakage in good range. Tight base, no rattle. As is in pictures.