Mullard 5AR4 GZ34 Rectifier Vacuum Tube NOS-Testing 1G3GT Octal T34 ribbed black plates and horseshoe

ribbed black plates and horseshoe getters

new in box Sylvania 7056 tubes tested to spec on our Paul Hart-calibrated TV7/U

new in box US-made 1LN5 tubes tested to spec on our Paul Hart-calibrated TV7/U

Thes three new old stock

Mullard 5AR4 GZ34 Rectifier Vacuum Tube NOS-Testing 1G3GT Octal T34 ribbed black plates and horseshoeThis new old stock testing Mullard 5AR4 GZ34 rectifier tube tested an almost perfectly balanced 64 62 in sections One and Two, respectively, on our Paul Hart calibrated TV7 U where minimum (65%) is 40 40 and 62 62. There was no emission drop running the filament at 4. 3 rather than five volts. It has an F32 B5A1 factory date code and the customary Mullard hole in its centering pin. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF IT'S NOT LISTED, WE