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2 X EF86 TUBE. NEW OLD STOCK.
BRAND: TESLA. 1970s PRODUCTION.
GREY PLATES, HALO GETTER, MATCHED PAIR.
TESTED IN AMPLITREX AT1000 TUBE TESTER:
83% EMISSION (EM) 100% TRANSCONDUCTANCE (GM) 0.0mA GAS
80% EMISSION (EM) 105% TRANSCONDUCTANCE (GM) 0.0mA GAS