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307A=VT-225 Ken Rad NOS/75% coated glass 1940's (34ma)
30KD6 Sylvania NOS (0 in stock)
30KD6 Westinghouse JAPAN NOS (1 tube)
30MB6 GE branded International Servicemaster 1970's (0 in stock)
31 Philco by Sylvania engraved base NOS 1930's (11.5ma Gm=1000)
311CH Cetron NOS in original box 1979 (100ma) (311CH is sub for 211H)
31JS6C US Brands NOS (4 in stock)
31LQ6 US Brands NOS (3 in stock)
31LR8 Sylvania Dumont NOS (4 in stock)
31LR8 Sylvania NOS (1 in stock)
32HQ7 US Brands NOS (5 in stock)
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)
33GT7 US Brands (4 in stock)
33GY7A NOS (4 in stock)
350A Western Electric used/good 85% 1947 (78.2ma and Gm=7400)
350C Shuguang China NOS (sub for 5881 or 6L6GC) (68.5ma)
