3 US-Made 6U7 Vacuum Tubes Valves Lot of Three Raytheon It has outstanding silkscreening

It has outstanding silkscreening

It has dual O getters

chamfered O getters and rectangular radiators for cooler operation and longer tube life

hydrofluoric acid-etched GE provenance dots and excellent flashing

only an occasional pop or tick

3 US-Made 6U7 Vacuum Tubes Valves Lot of Three Raytheon It has outstanding silkscreeningThese three US made 6U7 tubes were tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. They tested (from left to right) as follows: 38, 40 and 62 where minimum (65%) is 40. 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 QUESTIONS. 1. MOST FORMS OF SHIPPING