(!) CX-112A RCA Cunningham Balloon ribbed plate engraved base like new 1930 era (9ma)
(!) UX-112A Radiotron Balloon engraved base used/good 1930 era (7.4ma)
(!) UX-112A Radiotron Balloon engraved base used/tests like new 1930 era (8.3ma) (Gm like new)
(1 set of 4 tubes) 6D6 Mixed US Brands used/good 1930's - 1940's (set of 4)
(DISPLAY TUBE) 480 Deforest Audio Balloon shape glass 1930's (for display purposes only - does not work)
(DISPLAY TUBE) TS-281 Tungsol Balloon NOS engraved base 1930's (for display purposes only)
(DISPLAY TUBES) 80 Balloon shape glass 1930's (for display purposes only - do not work)
(DISPLAY) 242 Duovac USA brass base 1930's used but has high current will not run stable in amp - sold as display tube only
112A Balloon no name with blue "Type 112-A" sticker on glass used/good (4.7ma)
112A Rayovac Balloon engraved base used/very good, internals like a UX-112A RCA (8.5ma)
15 Zenith engraved base used/50% output
1608 RCA white ceramic base NOS in white box 1940 era (32.5ma)
245=45 Silvertone engraved base 1934 used/tests like new (32ma Gm=2000)
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
27 National Union engraved base used/good 1930's (4.4ma)
281A Western Electric like new 1930's (38ma)
282A WE Balloon engraved base, like new, good 1.5" getter circa 1935 (sold out)
338A WE "engraved base" early 1940's like new