56 National Union engraved base used/tests like new 1930's (6.0ma)
56 RCA Balloon engraved base black plate tests like new 1930's (4.7ma)
6C6 Cunningham Radiotron used/good 1930's (42/31)
6C6 Raytheon used/tests like new 1930's hairline crack in base (2.1ma)
6D6 US Brands used/good (2 for $8)
6F6G National Union used/good mid-1940's (47ma)
6F6G RCA Cunningham used/good 1947 (31ma)
6F6G RCA NOS 1957 (42.2ma)
6F6G Tungsol burgundy base NOS 1951 (31.2ma)
71A Super Silvertone by Sylvania engraved base NOS 1937 (19ma)
71A Super Silvertone by Sylvania engraved base NOS 1937 (22.5ma)
71A Sylvania branded Hytron NOS 1946 (21.8ma)
75=VT-75 RCA Dual-Diode Triode NOS 1948 (36/19)
75=VT-75 RCA Dual-Diode Triode used/tests like new 1930's (26/19)
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)
80 Hytron engraved base used/strong 1930's (60/40 and 62/40)