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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)
PT-210 Balloon engraved base NOS 1920's (29ma Gm=2000)
UX-226 RCA Radiotron balloon used/good 1920's (3.7ma Gm=900)
UX-874 Radiotron Balloon tests like new 1930 era
UY-224 RCA Balloon used/good 1930's (37/25) (3.0ma Gm=700)
UY-224 RCA Balloon used/tests like new 1930's rattle inside base (50/25) (4.2ma Gm=1000)
UY-224A Champion Balloon used/very good 1930's (46/25)
UY-224A RCA Balloon used/very good 1930's (41/25) (2.6ma Gm=900)
