6973 RCA Beam Power Amplifier Tube. Designed to be used in hi fidelity audio amplifiers. New old stock. No longer available for export. MFR: RCA. SKU: 6973.
Electro-Harmonix 6973 EH Power Vacuum Tube | TubeDepot.com
RCA 6CZ5 Power Tubes Quartet lot For Magnatone Supro Harmony Brand New USA Made 6973 Equivalent | Reverb
Montgomery Ward 62-9033
Electro-Harmonix 6973-EH Power Tube | Sweetwater
6973 SYLVANIA 6CZ5 PAIR OF VALVE FINAL TETRODE AUDIO JUKEBOX NOS/NIB