1 X ECC81 PHILIPS MINIWATT TUBE. 1960s MULLARD PROD. COPPER RODS. USED.18.CH169

1 X ECC81 TUBE. 1960s MULLARD PRODUCTION. B5E1 DATE CODES. GRAY PLATES, HALO GETTER, COPPER RODS. TESTED IN ROEHRENTEST TUBE TESTER.

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