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2 X E88C / 8255 SINGLE TRIODE VALVO TUBE. NEW OLD STOCK.
BRAND: VALVO. 1960s PHILIPS PRODUCTION
SILVER PLATES, HALO GETTER, GOLD PIN, 3 MICA, MATCHED PAIR.
TESTED IN AMPLITREX AT1000 TUBE TESTER:
88% EMISSION (EM) 101% TRANSCONDUCTANCE (GM) 2.5mA GAS
89% EMISSION (EM) 88% TRANSCONDUCTANCE (GM) 0.0mA GAS