Note – there are no markings on the glass, the markings have faded or rubbed-off. Sylvania 6SN7GT. Matched Pair +1.
Item Tag: Twin Triode
Pair RCA 6SN7GTB short glass Black Plate Tubes Balanced STRONG 6SN7
PairRCA 6SN7GTB. Black Plate Balanced Tubes. These tubes test 85/85 and 90/90where a new tube tests 85/85.
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Matched Pair 1958 GE Side Getter 6SN7GTB Tubes STRONG! 6SN7
Matched Pair 1958 GE Side Getter 6SN7GTB Tubes. These tubes test 85/85 where a new tube tests 85/85.
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Pair 1957 GE Side Getter 6SN7GTB Tubes STRONG! 6SN7
Pair 1956 GE Side Getter 6SN7GTB Tubes. These tubes test 90/90 and 85/85 where a new tube tests 85/85.
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Matched Pair +1 RCA 6SN7GTB Staggered Black Plate Tubes Balanced STRONG 3pc 6SN7
RCA 6SN7GTB. Matched Pair +1.
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Pair Sylvania Black Plate Chrome Top 6SN7GTB Tubes STRONG! 6SN7
These tubes test 86/86 and 88/88 where a new tube tests 85/85.