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(!) (SINGLE) 6F8G Sylvania branded Tungsol coated glass parallel plates used/good 1940's (7.2/6.8ma) (Same Gm)
(!) (SINGLE) 6F8G Sylvania Zenith coated glass parallel plates used/tests like new 1940's (8.6/9.0ma) (same Gm)
6F8G Raytheon NOS 1945 era (5.8/5.4ma)
