(!) (Recommended Single) 7F7 Sylvania rebranded JAN-CBRZ-7F7 round gray plates used/like new 1940's (2.9/3.2ma) (highest testing single)
7F7 Sylvania rebranded GE round gray plates NOS 1952 (2.0/2.4ma)
7F7 Sylvania rebranded RCA NOS 1969 (1.8/1.8ma)
7F7 Sylvania rebranded RCA Victor parallel round gray plates used/good 1950 (2.1/2.4ma)
7F7 Sylvania round gray plates NOS 1952 (2.4/2.5ma)
7F7 Sylvania staggered round black plates NOS 1957 (2.2/2.2ma)
7F7=VT-189 Sylvania rebranded GE round black plates used/like new 1943 (2.7/3.1ma)
7F7=VT-189 Sylvania rebranded GE round black plates used/like new 1943 (3.9/4.5ma)
