2 X 5963 TUBE. NEW OLD STOCK.

BRAND: RCA. 1950s PRODUCTION.

17MM BLACK PLATES, RECTANGULAR GETTER, MATCHED PAIR.

TESTED IN ROEHRENTEST TUBE TESTER:

106/113% 7.386/7.889mA EMISSION  (EM)

107/105% 7.484/7.379mA EMISSION (EM)

CH167U1