For sale is a new matched Quad NOS New Svetlana WingedC 1960s 6BM8 ECL82 vacuum tubes, 

test NOS new on our calibrated Jackson 648A tester.

FREE domestic shipping

the Russian crylic equivalent of 6BM8 is 6theta32 or 6F3P

you get 4 new tubes for $55

approximately 800 sold, just one quad left