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(!) 80 Tungsol ST-shape tests like new 1940's (57/40 and 60/40)
(!) 80 Tungsol ST-shape used/good 1946 (52/40 and 54/40)
01A National Union NOS 1940's (3.1ma)
01A Raytheon 4-Pillar box plate NOS 1930's (2.8ma)
UX-201-A Radiotron used/good 1930 era (2.4ma Gm=550)
UX-201-A RCA Radiotron Balloon tests like new 1930's (read review)
