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2 X 6F8G TUBE. NEW OLD STOCK IN ORIGINAL BOX.
BRAND: RCA. 1960s PRODUCTION.
BLACK PLATES, RECTANGULAR GETTER, COPPER RODS, MATCHED PAIR.
TESTED IN ROEHRENTEST TUBE TESTER:
113/117% EMISSION (EM) 111/110% TRANSCONDUCTANCE (GM) 0.2/0.6mA/V GAS
111/131% EMISSION (EM) 100/119% TRANSCONDUCTANCE (GM) 3.0/ 21mA/V GAS