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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 (14ma)
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)
6C5 Philco metal used/good 1952 (8.2ma)
6C5 RCA metal used/tests like new 1941-1945 (8.4ma)
6C5 RCA used/good 1964 (7.8ma) Gm like new
6C5 Sylvania NOS 1940's (8.6ma)
6C8G CBS NOS 1950's (like RCA) (3.7/4.1ma)
6C8G Raytheon round black plates used/tests like new 1940's (3.6/3.4ma)
6D6 Ken Rad NOS 1940's hairline crack in base
6F6 GE metal can NOS 1952 (38ma)
6F6G RCA Cunningham used/good 1947 (31ma) (Gm like new)
6F6G RCA Victor used/strong 1945 era (30.6ma) (Gm like new)
6F6G Tungsol used/strong 1940's (34ma) (Gm like new)
6F6GT Sylvania used/good 1949 broke off guide pin (32ma)
6F8G Raytheon NOS 1945 era (5.8/5.4ma)
