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26 RCA Radiotron/Cunningham engraved used/very good 1930's (5.9ma)
2C26 Hytron NOS 1944 (68/38)
2C36 Litton USA NOS (6 in stock)
2C37 Litton USA NOS 1970's (1 in stock)
2C39=7289 used
2C40 RCA NOS (6 in stock)
2C40A sealed NOS (5 in stock)
2C42 (1 in stock)
2C43 sealed NOS (3 in stock)
2C44 NOS (4 in stock)
2C53 National Union NOS (7 in stock)
31 Philco by Sylvania engraved base NOS 1930's (11.5ma Gm=1000)
33 GE NOS 1950
33 Sylvania balloon used/strong very good condition 1930 era (52/36)
33 Sylvania engraved base NOS 1940 era
33 Sylvania NOS small part of getter material flaked off glass (58/36) strong output
33 United USA NOS 1940's (53/36)
350A Western Electric used/good 85% 1947 (78.2ma and Gm=7400)
35Z6G National Union NOS (2 in stock)
56 National Union used/good 1940's (5.3ma)
