Super Silvertone 5Y3 5Y3G Vacuum Tube Rectifier Black Plate ST Shoulder Shape 6SJ7 NOS-Testing I am playing them in

I am playing them in my Sound Craftsmen RC-2 monoblocks with at 6

Tubes Three and Four measured 73/70 and 75/72

I just cleaned this three record LP set on my VPI 16

These tubes were made in the Soviet Union and sent to East Germany where

new in box matched pair of GE 12SL7 / 12SL7GT dual triodes was tested on our Pau Hart-calibrated TV7/U for shorts

Super Silvertone 5Y3 5Y3G Vacuum Tube Rectifier Black Plate ST Shoulder Shape 6SJ7 NOS-Testing I am playing them inThis black plate Super Silvertone 5Y3G rectifier tube was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. It measured 57 60 where minimum (65%) is 40 40 and 100% is 62 62. It has a nifty, old fashioned Coke bottle; a D getter, good flashing for its type and a 41X date code. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF IT'S NOT LISTED, WE MAY HAVE IT. PLEASE ALSO SEE OUT ETSY SISTER SITE