CBS 5U4 5U4GB Vacuum Tube Rectifier Black Plates Tray XYZ Crosslisted This lot of two (one

This lot of two (one 12K7G and one 12K7GT) National Union 12K7 tubes tested to spec on our Paul Hart-calibrated TV7/U

I listened to them in one of my Sound Craftsmen RC-2 monoblock amplifiers and they sounded great

" Tube one has a brown base and 59-43 date codes while Tube Two has 1-17 date codes and a black base

This album is very quiet with a nice

They come in nifty Western Electric boxes dated April 21

CBS 5U4 5U4GB Vacuum Tube Rectifier Black Plates Tray XYZ Crosslisted This lot of two (oneThis CBS 5U4G rectifier tube tested 56 52 where minimum (65%) is 40 40 and 100% is 62 20. It has a crenelated, rectangular top mica spacer and a smooth, rectangular bottom mica; ribbed, black plates, 5943 date codes; excellent flashing and a top, double D getter. It is missing its CENTERING PIN and has been marked for safe and easy insertion. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF IT'S NOT LISTED, WE MAY HAVE IT. PLEASE ALSO SEE OUT ETSY