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2 X EC86 TUBE. NEW OLD STOCK.
BRAND: MULLARD. 1960s SIEMENS UND HALSKE PRODUCTION.
GREY PLATES, HALO GETTER, 3 MICA, GOLD PIN, MATCHED PAIR.
TESTED IN FUNKE W20 TUBE TESTER:
MINIMUM GOOD EMISSION = 60% = 7mA
13.6mA EMISSION (EM)
14.5mA EMISSION (EM)