NOTE, the tube tester is not for sale.
Item Tag: SYLVANIA
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1 Sylvania JHS 5654/6AK5W Tube D Getter Tested Little Dot NOS/NIB
Up for sale is 1 Sylvania JHS 5654/6AK5W Tube. Constructed with gray plates and a top D getter.
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(1) Tested 1965 Sylvania JHS 5654 6AK5W Tube Code 65-03 Mil Spec 6AK5 W Tube
(1) Tested 1965 Sylvania JHS 5654 6AK5W Tube. Green letters. Date Code 65-03 (1965). We prefer the versatility and precision of Hickok TV-10 military testers and use them almost exclusively except in rare instances when pinout/socket compatibility is not possible.
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1 Sylvania JAN CHS 6AK5 Tube D Getter Tested NOS/NIB
Up for sale is 1 Sylvania JAN CHS 6AK5 Tube. Constructed with gray plates and a top D getter.
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(1) Tested 1961 Sylvania JHS 5654 6AK5W Tube with Box Mil Spec 6AK5 W Tube
(1) Tested 1961 Sylvania JHS 5654 6AK5W Tube with Original Box. We prefer the versatility and precision of Hickok TV-10 military testers and use them almost exclusively except in rare instances when pinout/socket compatibility is not possible.
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(1) Tested Sylvania 5654 6AK5W Tube with Box Date Code BH Made in India (b)
Date Code BH. Made in India. (1) Tested Sylvania 5654/6AK5 Tube with Original Box. We prefer the versatility and precision of Hickok TV-10 military testers and use them almost exclusively except in rare instances when pinout/socket compatibility is not possible.
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Sylvania 6SN7-GT Triple Hole Bad Boys – NOS – Premium Matched Pair – Very Strong
In addition, these tubes have the black T-plates secured with 3 rivets instead of the usual 2 rivets/holes (holes are the hollow center part of the T-plate rivets). Both tubes test very strong, well above NOS.
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Matched Pair of Sylvania 7027A NOS NIB Vacuum Tubes
Pair of NOS Sylvania 7027A tubes, with original boxes. A perfect Gm match, and about a 6mA difference in plate current, as tested on the Amplitrex AT1000. Number 7027A. Actual manufacturer Sylvania.
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Matched Pair +1 Sylvania 6SN7 Staggered Black Plate Tubes Balanced STRONG 3pcs
Note – there are no markings on the glass, the markings have faded or rubbed-off. Sylvania 6SN7GT. Matched Pair +1.
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Matched Pair Sylvania 6L6G Smoke Glass Vacuum Tubes Amplitrex Tested Strong
Both tested strong on an Amplitrex AT1000 tube tester with the following results (as photographed): Tube 1- 83% ip 89% gm Tube 2- 72% ip 72% gm