4x ECC81 / 12AT7 VALVO tubes - YKA / YKB - COIN base / D getter- ECC 81 - 1953
£139.33
Made by Valvo in Hamburg, West Germany. VERY RARE & EARLY version. With YKA and YKB / D codes, COIN base and D - getter - made in 1952 and 1953. See pictures. Good tube starts at 7/7. Tubes are NOT strong.
