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(DISPLAY TUBE) 480 Deforest Audio Balloon shape glass 1930's (for display purposes only - does not work)
(DISPLAY TUBES) 80 Balloon shape glass 1930's (for display purposes only - do not work)
(Single) 46 National Union NOS 1950 era (56ma Gm=3000)
(Single) 46 Philco by Sylvania NOS 1940's (50ma Gm=2600)
(Single) 46 RCA NOS original box 1940's (59ma Gm=2900)
*** (BEST PRICE) UY-224 US Brands used/good
171A RCA Radiotron Balloon used/good 1932 (20ma)
224 CECO Balloon used/strong 1930's (44/25) (3.0ma Gm=1000)
224 US Made Balloon used/tests like new 1930's no printing (50/25) (5.4ma Gm=1000)
24 Philco Balloon used/very good 1930's (3.3ma Gm=900)
42 Philco used/good 1940's (30.8ma)
46=VT-63 Ken Rad used/tests like new 1940's (57.2ma Gm=2660)
51 Arcturus Blue Balloon used/very good 1930's (46/26)
551 Arcturus Blue Balloon used/very good 1930's (43/26)
56 RCA Balloon engraved base black plate tests like new 1930's (4.7ma)
71A Cunningham Balloon used/tests like new 1930's (30ma)
71A Sylvania used/good 1930's (21ma)
874=US Navy CRC 38274 RCA Radiotron Balloon tests like new 1930's
C324 Cunningham Balloon used/good 1930's (2.8ma Gm=700)
C324 Cunningham Balloon used/good 1930's (3.5ma Gm=800)
