2 X ECC83 ERA TUBE. 1960s RFT / TESLA PROD. MATCHED PAIR. 69. CH166

2 X ECC83 TUBE. 1960s TESLA PRODUCTION. GRAY PLATES, HALO GETTER, MATCHED PAIR. TESTED IN FUNKE W20 TUBE TESTER MINIMUM GOOD EMISSION = 60% = 0.7mA.

eBay