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257A Western Electric printed base NOS 1960
26 Coronado by RCA tests like new 1940's (6.0ma)
26 National Union engraved base tests like new 1930's (6.0ma)
26 RCA Radiotron/Cunningham engraved used/good 1930's (3.6ma)
26 RCA Radiotron/Cunningham engraved used/very good 1930's (5.9ma)
272A Western Electric "meshplate" used/good 1963 (5.0ma Gm=600)
31 Philco by Sylvania engraved base NOS 1930's (11.5ma Gm=1000)
37 Raytheon NOS 1946 (7.3ma) (Highest mA)
37 RCA branded Philco used/good 1940's (6.4ma)
37 Sylvania branded Raytheon NOS 1948 (7.0ma)
40 NOS
443A Western Electric NOS (9 in stock)
443A Western Electric used/good (10 for $49.99)
443A Western Electric used/good (60 in stock)
485 National mesh-plate NOS 1940's (6.7ma)
485 National Union used/good 1940's (6.2ma)
485 Sparton engraved base used/good 1936 (5.5ma)
485 Sylvania branded Philco NOS 1940's (6.0ma)
485 Sylvania engraved base used/good 1934 (8.3ma)
485 Sylvania NOS 1940's (5.5ma)
