RCA JAN 12SX7GT vacuum tube - new old stock - black plates - best original box, RCA JAN 12SX7GT vacuum tube - new old stock - black plates - original box retailer
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RCA JAN 12SX7GT vacuum tube - new old stock - black plates - best original box, RCA JAN CRC 12SX7GT vacuum tubenew old stock - excellent conditionoriginal box - in poor conditionblack ladder platestested.
RCA JAN CRC 12SX7GT vacuum tube
new old stock - excellent condition
original best box - in poor condition
black ladder plates
tested on a Hickok Cardmatic KS 15874-L2 tube tester
What's a 12SX7GT? It's a 12SN7 that is for use with a low voltage plates supply. RCA's curves for this tube go from 0 to 50 volts. See second photo.
JAN = Joint Army Navy