It's is a direct equivalent of the ECC99 and E182CC. Be careful! Soviet tubes are only approximate analogs of Western tubes and match pinout, but are not exact copies...
6F6S ~ 6F6G ~ 6F6GT ~ KT63~ N63. Made in USSR. Date codes and font styles also differ between production runs, so don't expect yours to look identical to...
NOVOSIBIRSK factory. MADE IN USSR. Lot 4 PCS! I will fill your order with valves of my choice.
Vintage Soviet tube 6N8S Novosibirsk NOS Tested Lot 2 pcs Shipping - Ukrposhta
Vintage Soviet tube 6k4p-v 6к4п-ев Novosibirsk NOS in original box Lot 14 pcs Shipping - Ukrposhta
Vintage Soviet tube 6k4p-ev 6к4п-ев Novosibirsk NOS in original box Lot 4 pcs Shipping - Ukrposhta
Vintage Soviet tube 6k4p-ev 6к4п-ев Novosibirsk NOS in original box Lot 4 pcs Shipping - Ukrposhta
5C4S Double Anode Rectifier TubeEqivalent for the 5Z4 / 5Z4G / CV1863Made in USSR"Soyuz Tube Factory", Novosibirsk.Same Date Code 09-1981Tubes have "OTK" and "" markings on themThe tubes are...
NEW MATCHED PAIR 6N1P IN BOX 6N1P / ECC88 / 6DJ8 Russian Tubes By NOVOSIBIRSK Factory Tubes From 1968!! Super RARE Version THE TUBE IS NEW NEVER USED!!! We...
6N1P-EV / ECC88 /6DJ8 REFLECTOR PLANT GOLD GRID /OTK / RHOMBUS. I have even successfully tried E288CC and 6N6P (and ECC82, ECC81, E80CC with heater modifications). I have noticed...