Lansdale 5Y3 5Y3GT Vacuum Tube Rectifier Gray Plate Zenith Gebraucht They have G 3R and

They have G 3R and W 4R date codes

This Korean War-vintage tube has US Army Signal Corps SC 402 contract codes and 1-44 date codes

These tubes have tall bases

Both tubes measured 69 where minimum (65%) is 55

Lansdale 5Y3 5Y3GT Vacuum Tube Rectifier Gray Plate Zenith Gebraucht They have G 3R andThis gray plate Lansdale MANUFACTURED, Philco BRANDED 5Y3GT rectifier tube was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. It measured 54 60 where minimum (65%) is 40 40 and 100% is 62 62. It has a top, D getter, gray plates; excellent flashing and 1063 6217 150 factory date codes. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF IT'S NOT LISTED, WE MAY HAVE IT. PLEASE ALSO SEE OUT ETSY