4 Ken-Rad 6D6 Vacuum Tubes Valves Black Glass Lot of Four NOS-Testing 5Z4 Rectifier excellent flashing and what appears

excellent flashing and what appears to be a US Navy logo on the base

This lot of RCA 2050 thyratron tubes were tested on our Paul Hart-calibrated TV7/U

952 and 0-39 date codes

They tested as follows: 66/38

This matched pair of GE 12B4A tubes was tested on our Paul Hart-calibrated TV7/U for shorts

4 Ken-Rad 6D6 Vacuum Tubes Valves Black Glass Lot of Four NOS-Testing 5Z4 Rectifier excellent flashing and what appearsThis lot of four black glass Ken Rad 6D6 tubes was tested on our Jackson 648 Mutual Conductance tester for shorts, gas and transconductance. There were no shorts or gas. They tested (from left to right) as follows: 81%, 106%, 109%, and 117% respectively. New nominal is within a standard deviation of 1600 and the Jackson expresses this as a percentage. BECAUSE OF THE BIZARRE, INTRUSIVE AND DRACONIAN GERMAN PACKAGING REGULATIONS AND THE SEVERE FINES AND