3 US-Made 12SF7 Vacuum Tubes Valves Lot Of Three Trio 6HV5A Octal It's a bit worn in

It's a bit worn in places

new in box US-made 9AU7 tubes tested to spec on our Paul Hart-calibrated TV7/U

I BUY TUBES IN BULK

53/53 and 53/55 where minimum (65%) is 40/40 and 100% 62/62

These five Sylvania-MANUFACTURED (one is Philco-LABELED) 6AX4GT rectifier tubes were tested on our Paul Hart-calibrated TV7/U for shorts

3 US-Made 12SF7 Vacuum Tubes Valves Lot Of Three Trio 6HV5A Octal It's a bit worn inThese US made 12SF7 tubes were tested on our Paul Hart calibrated TV7 for shorts, gas and transconductance. There were no shorts or gas. They measured 55 46, 72 50 and 72 52, respectively, where minimum (65%) is 46 40 and 100% is 85 62. 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 NEED OR HAVE ANY