6F5 GE metal can NOS 1953 (1.0ma Gm=1500)
6F5 RCA Victor metal can used/good 1940's (0.6ma Gm=900)
6F5 Sylvania metal can NOS 1940's (1.6ma Gm=2000)
6F5 US Brands metal can NOS (9 in stock)
6F5GT RCA Victor NOS 1949 (1.3ma)
6JK6 Sylvania branded Dumont NOS (8ma)
6JS6A RCA NOS 1967 (92ma)
6JS6A Sylvania NOS (114ma)
6JS6B GE branded Zenith NOS (93ma)
6JS6C International Korea NOS 1970's (100ma)
6JS6C RCA NOS (72ma)
6JS6C RCA NOS 1970's (143ma)
6JS6C Sylvania branded Philco NOS (91ma)
6JS6C Sylvania branded RCA NOS 1970's (64ma)
6JS6C Sylvania NOS (75ma)
6K7 GE metal can NOS 1952 tarnished metal can (10.2ma)
6K7 Ken Rad used/very good 1940's (11.6ma)
6K7 Sylvania branded Philco NOS 1940's (10.6ma)
6K7 Sylvania NOS 1940's (9.4ma)
6K7G Sylvania NOS 1940's (2 in stock)