4 Sylvania 6U7 6U7G Vacuum Tubes Lot Of Four The Social Animal copiously-illustrated book is in excellent

copiously-illustrated book is in excellent condition

(Transconductance: / where the TV7/U minimum (65%) is 56/56

This new old stock-testing Van Dyke Type 22 X 222 X-223 was tested on our Paul Hart-calibrated TV7 For shorts

excellent flashing and copper support rods

romantic and poignant like it should

4 Sylvania 6U7 6U7G Vacuum Tubes Lot Of Four The Social Animal copiously-illustrated book is in excellentThese four Sylvania MANUFACTURED 6U7G tubes were tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. They tested (from left to right) as follows: 44, 52, 55 and 55 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