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3 X EL504 TUBE. NEW OLD STOCK.
BRAND: MULLARD. 1960s PRODUCTION.
GREY PLATES, HALO GETTER, COPPER RODS, 3 MICA, MATCHED TRIO.
TESTED IN FUNKE W20 TUBE TESTER:
MINIMUM GOOD EMISSION = 60% = 66mA
100mA EMISSION (EM)
100mA EMISSION (EM)
100mA EMISSION (EM)
CH165U1