Sylvania6SN7GTBusedSylvania 6SN7GTB Silver top black plate 1958 (quantity 4)4rare Sylania 6SN7GTB silver top black plate tubes from 1958 I believe. Just back from testing at a reputable local shop. Tubes tested good for shorts, emission and grid leakage. U.S. shipping only.105.00

Sylvania 6SN7GTB Silver top black plate 1958 (quantity 4) [Expired]


no longer for sale

4rare Sylania 6SN7GTB silver top black plate tubes from 1958 I believe. Just back from testing at a reputable local shop. Tubes tested good for shorts, emission and grid leakage. U.S. shipping only.
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