KC1 Triode. A vacuum tube by Telefunken. #18179 | M-Ware
Philips 32B Three Tube Radio 1936 Vintage Restoration Data Schematic Page 2
KC1 Triode. Eine historische Radioröhre von Tungsram. ID23281 | eBay
Carnegie Institution of Washington publication. . 14 15 FIG. 13. — Hydrogen electrode that can be placed in the colorimeter for calibrating the colori- metric method of determining the PH, being
KC1 Triode. A vintage vacuum radio tube by Tungsram. Wehrmacht #23895 | M-Ware
KC1 @ The Valve Museum
TS Audio KC1 Tube Preamp With Separate Power Suppy Photo #2705981 - Canuck Audio Mart
KC1 Triode. A vintage vacuum radio tube by Valvo #23190 | M-Ware