Tung Sol JAN 1S5 Military Portable Radio Tube VT-0503 - Etsy.de
Genuine Goodyear 1S5-175 Air Spring
RCA 1S5 Vacuum Tube | eBay
1S5 Sharp Cutoff Pentode Tube. Designed to service as a detector-audio tube in a portable piece of equipment. MFR: RCA, GE, CBS, Sylvania, Tung Sol. SKU: 1S5. New old stock. No longer