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22KM6=22JF6 Mixed Brands NOS (1 in stock)
22KV6A GE NOS (5 in stock)
235=35 National Union balloon used/good 1933 (38/26)
235=35 Silvertone Balloon used/tests like new 1930's (43/26)
236=36 Radiotron Balloon NOS in original boxes with data sheets (sold out)
24 Philco Balloon used/very good 1930's (3.3ma Gm=900)
24A National Union ST-shape used/good 1940's (39/25)
24A National Union NOS (5 in stock)
24A Philco by Sylvania ST-shape tests like new 1940's (50/25 and 4.3ma Gm=1000)
24A Raytheon NOS 1940's (50/25)
24A RCA Cunningham engraved base NOS 1940 era (3 in stock)
24A Sylvania ST-shape engraved base used/very good 1930's (44/25) (2.9ma Gm=800)
257A Western Electric engraved base NOS 1930's (6 in stock) (257A is a 231D with a top cap grid connection)
257A Western Electric printed base NOS 1954
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/very good 1930's (5.9ma)
26 ST-14 National Union used/good 1950 era (3.8ma, Gm=900)
26 ST-14 Super Silvertone used/good 1930's (3.6ma, Gm=800)
