3 RCA 6K7 Vacuum Tubes Small Logo Lot Of Three April 21 2025 dark-gray bottles and bottom

dark-gray bottles and bottom

This perfectly-matched pair of milspec GE 6C4 6C4WA triodes was tested on our Paul Hart-calibrated TV7/U for shorts

steel support rods and gray plates

new in box 14BR11 tubes tested to spec on our Paul Hart-calibrated TV7/U

US Navy markings and excellent flashing

3 RCA 6K7 Vacuum Tubes Small Logo Lot Of Three April 21 2025 dark-gray bottles and bottomThis new old stock testing trio of RCA 6K7 tubes were tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. They measured 34, 52 and 61 where minimum (65%) is 36 and 100% is 55. These tubes all have small logos as well as 048, 035 and 226 date codes, respectively. 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