*** (BEST PRICE) UY-224 US Brands used/good
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 RCA NOS 1940's (60.4ma Gm=3210)
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 RCA Radiotron Balloon used/good 1930's (21ma)
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)
Deforest Audion Isolantite base display tube (single)
Deforest Audion metal base display tube 1920's (single)
NY-224 National Union Balloon used/good 1930's (38/25) (3.3ma Gm=800)
NY-224 National Union Balloon used/good 1930's (42/25) (2.4ma Gm=800)
