6N23P E88CC 6DJ8 6922 Strong Matched Pair of Vintage Russian tubes Voskhod Rocket, Year 1971

Strong Matched Pair (2 tubes)
of Vintage NOS Russian Tubes 6N23P
an quality equivalent of the E88CC / 6DJ8 / 6922
made in KALUGA city VOSKHOD plant
rocket logo
same date "IV-71" April 1971!!!
GRAY SHIELD, SINGLE WIRE.
Military equipment , high reliability, long life.
The tubes are never used. Old stock.
VERY GOOD BALANCE!
MEASURED on Tube-tester L1-3.
Ua=90V; Rk=80ohm
Tube1 ->  Ia1=14.1 mA |  Ia2=15.5 mA  |  S1=12.9 mA/V  |  S2=14.1 mA/V
Tube2 ->  Ia1=15.4 mA |  Ia2=14.5 mA  |  S1=13.5 mA/V  |  S2=12.5 mA/V

***
The marketplace applies a free shipping policy.
In fact, sellers pay a lot of money to the post office for shipment.
Therefore, please, before buying more than one item, contact me and you will receive a personal discount coupon for combined shipment.

***
Thanks and good luck!