4 Philco Number Type 27 #27 Vacuum Tubes Stamped / Engraved Bases Lot Of Four 3rd Quarter BW40 Tube One: 31

Tube One: 31

This new old stock-testing matched pair of RCA 6BL7GTA dual triodes was tested on our TV7/U for shorts

new in box Sylvania 6AC7 tubes tested to spec on our Paul Hart-calibrated TV7/U

gas and emissions

This tube has anode radiators for cooler operation and longer tube life

4 Philco Number Type 27 #27 Vacuum Tubes Stamped / Engraved Bases Lot Of Four 3rd Quarter BW40 Tube One: 31These four Philco engraved base number type 27 tubes were tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas; and they measured as follows: 40, 41, 42 and 44 where minimum (65%) is 25 and 100% is 38. 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