2 X ECC83 TUBE. NEW OLD STOCK.

BRAND: WAS. 1960s TESLA PRODUCTION.

GRAY PLATES, HALO GETTER, MATCHED PAIR.

TESTED IN FUNKE W20 TUBE TESTER:

MINIMUM GOOD EMISSION = 60% = 0.7mA

0.8/0.9mA EMISSION (EM)

0.8/0.8mA EMISSION (EM)

CH166U1