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12J5GT RCA NOS (6.7ma)
12J5GT RCA NOS 1954 slightly tilted glass (11ma)
12J5GT Sylvania NOS 1940's (9.6ma Gm=2900)
12J5GT Tungsol NOS 1940's (10.6ma Gm=2800)
JAN-CNU-12J5GT Nat. Union Black Ribbed Plate NOS 1952 (8.2ma)
