Ken-Rad Type 77 Pentode Valve/Tube - Tested Good

Type 78 RCA amplifier audio radio vacuum tube valve tested ST shape audio 278 78

1 Silvertone Type 78 Vacuum Tube Tested Good On Calibrated TV 7

(1) Tested Zenith Type 78 Tube Date Code 9W Zenith 78 Pentode Tube (a)

(1) Tested Zenith Type 78 Tube Date Code 9W Zenith 78 Pentode Tube (b)

Emerson 6SG7 Metal Vacuum Tube Pentode TV-7 Tested Good Vintage Radio Amp Valve

Antique PHILCO Type #42 ST Power Pentode Amplifier Vacuum tube tested good

Tungsram Type 78 Test V Strong Pentode Audio Radio Valve Vacuum Tube