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6EM7 RCA coin-base used (2.5ma/28ma)
6EM7 RCA NOS 1965 (4.2ma/31ma)
6EM7 Sylvania NOS 1970 (1.5ma/47ma)
6EM7 Sylvania Silvertone NOS 1960's (1.5ma/55ma)
6SN7WGT Raytheon brown base black ribbed plates "D" getter halo 1959 used/good (6.2/8.4ma)