NOS Aerotron 6CM6 Vacuum tube - White Box - Tested

GE 6CM6 Vacuum Tube Hickok Model 752A TESTED - NOS

NIB Matched Pair Sylvania 6CM6 Tubes Radio Audio 6V6 6AQ5

Vintage Tested Strong Tung-Sol 6X4 Black Plate Vacuum Tube

(1) TUNG-SOL 84/6Z4 BLACK PLATES USA VACUUM TUBE. TV-7 TESTED. STRONG TUBE.

Vintage Tested Strong Tung-Sol 6DG6GT Radio Audio Amplifier Vacuum Tube

Tung-Sol 6SK7 Vacuum Tube NOS NIB Tested Strong TV-7 Vintage Radio Amp Audio USA

Tung-Sol 35L6GT Vacuum Tube Tested Strong On Hickok