24A RCA Cunningham ST-shape used/tests like new 1940's (49/25 and 4.8ma Gm=1200)
24A Sylvania ST-shape engraved base used/very good 1930's (44/25) (2.9ma Gm=800)
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)
2C26 Hytron NOS 1940's (6 in stock)
2C26A National Union NOS 1940's (1 in stock)
2C26A National Union NOS 1940's (5 in stock)
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 Sylvania balloon used/strong very good condition 1930 era (52/36)
