NOS new testing matched pair Sylvania black plate 5Y3GT vacuum tubes
$ 13.2
Description
For sale is this NOS new testing electronically matched pair Sylvania black plate 5Y3GT vacuum tubes test NOS new on our calibrated Jackson 648A tester, note electronically matched, one has yellow, one has green logo, but otherwise else look equal including the 2/3 way up gold Sylvania type 5Y3GT lettering.
