CBS 5U4 5U4GB Vacuum Tube Rectifier Black Plates Tray XYZ Crosslisted and if it is

and if it is

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

Tube Two measured 32

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

I am playing them in one of my Radio Craftsmen RC-2 monoblocks with Super Furry Animals' "Radiator" and they sound great

CBS 5U4 5U4GB Vacuum Tube Rectifier Black Plates Tray XYZ Crosslisted and if it isThis 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