Rare 1C7S = DY30 = 1B3GT tubes. lot of 4

Rare 1C7S = DY30 = 1B3GT tubes. lot of 4

1C7S Russian Tubes. Lot of 4!!!!
Equivalent of the DY30 / 1B3GT
New, old stock.The tubes are never used.
"OTK" marking indicates premium tested
WE WILL COMBINE MULTIPLE WINS TO SAVE ON.
We guarantee you complete satisfaction with all my products. If you receive an item you ordered is received damaged or defective, we will refund you the price you paid for it or replace it with identical one. We accept returns to Ukraine. Item for returning must have the original tags and packing, otherwise it won't be accepted.