SWGP Silver Shield 6N23p (ECC88 6DJ8 E88CC 6922) Made by VOSKHOD factory (ROCKET logo, city Kaluga USSR) in 1973.

The parameters are measured at Uf = 6.3 V, Ua = 90 V, Bias voltage = -1.3 V

Tubes 6N23P in store:

PAIR 6N23P Reflektor Silver Shields 1975

https://www.ebay.co.uk/itm/387328662706

PAIR 6N23P Voskhod Grey Shield 1975

https://www.ebay.com/itm/387365992798

PAIR 6N23P Reflektor Silver Shields 1974

https://www.ebay.com/itm/387545088495

PAIR 6N23P Reflektor Grey Shield 1974

https://www.ebay.com/itm/387365953198

PAIR 6N23P Voskhod Grey Shield 1974

https://www.ebay.com/itm/387419781295

PAIR 6N23P Voskhod Grey Shield 1973

https://www.ebay.com/itm/387498918749

PAIR 6N23P Voskhod Grey Shield 1972

https://www.ebay.com/itm/387503089436

PAIR 6N23P Voskhod Grey Shield 1971

https://www.ebay.com/itm/387572827084