(!) (PAIR) UX-112A RCA Radiotron Balloon engraved base used/good (7.1ma and 7.4ma)
(!) (Recommended Single) 5Z3G FAA RCA NOS 1962 (56/40 and 56/40)
(!) CX-112A RCA Cunningham Balloon engraved base used/good 1930 era (6.2ma)
(!) 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)
(Display tube) 201A Volutron brass base - does not work - in good condition - 1920's
(DISPLAY TUBE) 480 Deforest Audio Balloon shape glass 1930's (for display purposes only - does not work)
(DISPLAY TUBE) UV-201-A Radiotron "brass base and tipped" 1920's (does not work - display tube)
(DISPLAY TUBES) 80 Balloon shape glass 1930's (for display purposes only - do not work)
01A Wards by Sylvania used/good 1940's (2.6ma Gm=700)
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)
46 RCA NOS 1940's (60.4ma Gm=3210)
46 Sylvania NOS 1940's (52ma Gm=2950)
46=VT-63 Tungsol NOS 1940's (62ma Gm=3350)
71A RCA Cunningham Radiotron used/tests like new 1936 (24ma)
71A RCA Radiotron Balloon used/good 1930's (21ma)
85 GE NOS 1940's (2 in stock)