5 Philco Number Type 37 #37 Vacuum Tubes Valves Black Plate Shoulder ST Shape Lot Of Five Azia Records I am playing it in

I am playing it in my Musical Paradise MC-3 single-ended integrated amplifier with The Eagles' seminal "Hotel California" album and it sounds terrific

Tube One measured 1690 micromhos and drew 19

This matched pair of Cunningham 6SJ7 tubes was tested on our on our Paul Hart-calibrated TV7/U for shorts

This new old stock-testing Sylvania 12SK7GT tube tested 64 on our Paul Hart-calibrated TV7 where minimum (65%) is 48

new in box International Servicemaster 19CG8 tube tested to spec on our Paul Hart-calibrated TV7/U

5 Philco Number Type 37 #37 Vacuum Tubes Valves Black Plate Shoulder ST Shape Lot Of Five Azia Records I am playing it inThese five Philco Type 37 triodes were tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. They measured 18, 20, 26, 30 and 3o where minimum (65%) is 23. They have black dark gray plates; dimpled sheet getters; old fashioned, coke bottle shape glass envelopes and terrific flashing. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF IT'S NOT LISTED, WE MAY HAVE IT. PLEASE ALSO SEE OUT ETSY SISTER