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4699=EL6 Philips Miniwatt 1940's used/very good (45ma)
46=VT-63 Ken Rad low hours/tests like new 1940's (57.2ma Gm=2660)
46=VT-63 Tungsol NOS 1940's (56.5ma Gm=3100)
47 RCA used/good 1940's rebranded Silvertone (30ma Gm=2150)
5W4=VT-97 Ken Rad metal can like new 1940's (52/40 and 52/40)
5W4GT Tungsol NOS 1952 (52/40 and 54/40)
5Z3G RCA used/good 1956 (46/40 and 48/40)
5Z3G TRIAD by RCA used/tests like new 1940's (52/40 and 52/40)
6A3 Ken Rad coated glass NOS 1950 (82ma)
6A3 RCA Victor NOS 1948-1949 (62ma)
6A3 Sylvania branded Tungsol used/good 1940's (70ma)
6A3 Tungsol coated glass used/good 1940's (44ma)
6A3 Tungsol coated glass used/good 1940's (60ma)
6AC5GT Sylvania NOS 1940's (39/21)
6AC7 GE NOS 1959 (12ma)
6AC7 GM Delco by RCA NOS 1940's (12ma)
6AC7 Ken Rad NOS 1940's (13ma)
6B4G Ken Rad branded RCA coated glass NOS 1946 (110ma)
6B4G Philco by Sylvania NOS 1947 (80ma)
6C5 Ken Rad metal used/good 1940's (6.5ma)