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2 X EC86 TUBE. NEW OLD STOCK.
BRAND: VALVO. 1960s RADIOTECHNIQUE PRODUCTION.
GREY PLATES, HALO GETTER, GOLD PIN, MATCHED PAIR.
TESTED IN FUNKE W20 TUBE TESTER:
MINIMUM GOOD EMISSION = 60% = 7mA
+25mA EMISSION (EM)
+25mA EMISSION (EM)