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1 X 6SN7GTB TUBE. NEW OLD STOCK IN ORIGINAL BOX.
BRAND: WESTINGHOUSE. 1960s PRODUCTION
BLACK LADDER PLATES, RECTANGULAR GETTER, COPPER RODS
TESTED IN ROEHRENTEST TUBE TESTER
MINIMUM GOOD EMISSION = 60% 79/83% 7.08/7.49mA EMISSION (EM). 2.66/2.8mA/V TRANSCONDUCTANCE (GM)