6LR8 NOS RCA radio audio amplifier electron vintage vacuum tubes 2 valves tested

VINTAGE NOS RCA 6AM8A VACUUM TUBE TUBES LOT OF 2 USA TESTED TUB13286

Lot of 3 RCA 6MN8 Vacuum Tubes NOS Vintage Electron Tube USA

LOT OF 2 RCA 6HS8 VINTAGE ELECTRON VACUUM TUBE

VINTAGE NOS RCA 6AM8A VACUUM TUBE TUBES LOT OF 3 USA TESTED TUB14428

RCA 6EB8 Vacuum Electron Tube TESTED

VINTAGE NOS RCA 6CG8A VACUUM TUBE TUBES LOT OF 3 USA TESTED TUB23034

Lot of 2 Vacuum Electron Tubes 1 New RCA 6U8A, 1 Used 6U8 unknown mfgr. tested