2 X ECC85 TUBE. NEW OLD STOCK IN ORIGINAL BOX.

BRAND: MARCONI. 1960s SPANISH PRODUCTION.

GRAY PLATES, HALO GETTER, COPPER RODS, HIGH GAIN, MATCHED PAIR.

TESTED IN AMPLITREX AT1000 TUBE TESTER:

204/216% EMISSION (EM) 155/159% TRANSCONDUCTANCE (GM) 2.5/1.4mA GAS

192/214% EMISSION (EM) 141/155% TRANSCONDUCTANCE (GM) 4.6/3.2mA GAS