6C6 Raytheon used/tests like new 1930's hairline crack in base (2.1ma)
6D6 US Brands used/good (2 for $8)
6D8G Sylvania 1947 branded GE 1949 used/tests like new (100/60)
6D8G US Brands NOS (2 in stock)
6F6G National Union used/good mid-1940's (47ma)
6F6G RCA Cunningham used/good 1947 (31ma)
6F6G RCA NOS 1949 (35.8ma)
6F6G RCA NOS 1957 (42.2ma)
71A Super Silvertone by Sylvania engraved base NOS 1937 (19ma)
75=VT-75 RCA Dual-Diode Triode NOS 1948 (36/19)
75=VT-75 Tungsol Dual-Diode Triode used/good 1940's (34/19)
78 US Brands NOS (3 in stock)
78 US Brands used/good (6 in stock)
