8 Philco Number / Type 77 #77 Vacuum Tubes Engraved / Stamped Base Mesh Plate Variety Lot Of Eight 6J8P Black new in box RCA 7A8

new in box RCA 7A8 tube tested to spec on our Paul Hart-calibrated TV7/U

34/34 and 38/41 where minimum (65%) is 25/25 and 100% is 38/38

They measured 34

new in box Philco 6BS8 tubes tested to spec on our Paul Hart-calibrated TV7/U

These five US-made 1AX2 tube tested to spec on our Paul Hart-calibrated TV7/U

8 Philco Number / Type 77 #77 Vacuum Tubes Engraved / Stamped Base Mesh Plate Variety Lot Of Eight 6J8P Black new in box RCA 7A8These eight Philco number type 77 tubes were tested on our Paul Hart calibrated TV7 U for shorts, gas and emissions. There were no shorts or gas. They tested (from left to right, top to bottom) 25, 30, 31, 32, 32, 33 37 and 39 where minimum (65%) is 31. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF IT'S NOT LISTED, WE MAY HAVE IT. PLEASE ALSO SEE OUT ETSY SISTER SITE "LOWTECHTWOO" AND OR CALL OR TEXT US AT 202 372 6931 IF YOU DO NOT SEE WHAT YOU