FOR SALE:
1
X 12SN7GT TUBE. NEW OLD STOCK.
BRANDS: HYTRON. 1940s PRODUCTION
BLACK PLATES, SQUARE GETTER
TESTED IN AMPLITREX AT1000 TUBE TESTER
113/104% EMISSION (EM). 111/100% TRANSCONDUCTANCE (GM). 5.4/4.0mA/V GAS.