12C5 / 12CU5 RCA VACUUM TUBE - GUARANTEED

RCA 12C5 / 12CU5 Beam Pentode VACUUM TUBE, in box. Part of a large cache of tubes - this one comes from my personal collection of tubes, many dating back to the 1950's to 1970's. Pretty sure I bought this one from a Villa-Mart (later Valu-Mart) Tube testing kiosk in Beaverton, Oregon in about 1970, never used. Tubes have not been recently tested, but are nevertheless GUARANTEED against DOA.  Images do an adequate job of representing the item.