6C5GT Super Silvertone USA used/good 1940's (6.8ma)
6C5GT Sylvania NOS 1940's (7.8ma)
6C5GT Sylvania NOS 1948 (7.4ma)
6F5 GE Amperex metal can NOS (1.0ma Gm=1500)
6F5 GE metal can NOS 1946 (1.2ma Gm=1700)
6F5 RCA metal can NOS 1950 (1.0ma Gm=1500)
6F5 RCA Victor metal can used/good 1940's (0.6ma Gm=900)
6F5 Sylvania metal can NOS 1954 (1.0ma Gm=1500)
6F5 US Brands metal can NOS (9 in stock)
6F6 GE metal can NOS 1952 (38ma)
6F6 Ken Rad metal can NOS 1950 (33ma)
6F6 Ken Rad metal can NOS early 1940's (42ma)
6F6=VT-66 RCA metal can NOS 1940's (40.5ma)
6H6 GE metal can NOS (7 in stock)
6H6 US Brands metal can NOS (12 in stock)
6H6GT Sylvania NOS (8 in stock)
6H6GT Tungsol like new 1946 some scrapes on the base (49-50/40)
6H6GT=VT-90A Sylvania JAN like new 1940's (20 in stock)
6J5GT RCA NOS 1970 (8.2ma)
6J7 Ken Rad used/good 1951 (1.9ma)