(BEST SINGLE) E81L=6686 Siemens made By Valvo, Hamburg, Germany NOS 1963
E81L=6686 Philips SQ made By Valvo, Hamburg, Germany NOS 1969 (1 pair)
E81L=6686 Siemens made By Valvo, Hamburg, Germany NOS 1968 (7 in stock)
E81L=6686 Siemens made By Valvo, Hamburg, Germany NOS 1968 and 1971 (1 pair)
E81L=6686 Siemens made By Valvo, Hamburg, Germany NOS 1971 (1 pair)
E81L=6686 Valvo, Hamburg, Germany branded RCA NOS 1971 (2 in stock)
