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1 X 12AY7 TUBE. NEW OLD STOCK.
BRAND: AMPEREX. 1960s GENERAL ELECTRIC PRODUCTION.
GREY PLATES, HALO GETTER.
THE TUBE NEW IS NEW, ALTHOUGH THE TEST RESULTS ARE LOW.
TESTED IN AMPLITREX AT1000 TUBE TESTER:
60/66% EMISSION (EM) 77/82% TRANSCONDUCTANCE (GM) 0.0/0.0mA/V GAS
CH166U1