Raytheon 6R7 Vacuum Tube New Old Stock Original Box - Etsy
Yamaha 6R7-82352-00-00 Tube, Cord; New # 63M-82351-00-00
6R7 RCA Valve Tube New Old Stock CV1963/VT-88 Equivalent | eBay
6R7 Sylvania Triode Amplifier Tube. Designed for service as diode detectors, AVC recifiers, and audio amplifiers in AC and DC operated receivers. MFR: Sylvania. SKU: 6R7. New old stock. No longer available