6BK7B Philco by Sylvania NOS 1960 (13.2ma/15.2ma)
6BW4 Sylvania black plates used/good 1954-1955
6C6 Tungsol NOS 1955 (45/31 and 2.1ma)
6CA4 Tungsol branded RAD TEL NOS 1961 (52/40 and 52/40)
6CS7 Tungsol NOS black plates 1960's (21/10ma) (internals like Sylvania)
6D8EG Philco NOS (1 in stock)
6D8G Sylvania 1947 branded GE 1949 used/tests like new (100/60)
6D8G US Brands NOS (2 in stock)
6DC6 US Brands used/test like new (0 in stock)
6DE4 Sylvania used/like new (1 pair)
6DE4 Tungsol NOS 1960's
6DE6 US Brands NOS (10 in stock)
6DF6 NOS
6DG6GT=6W6GT
6EY6 US Brands NOS (2 in stock)
6F6G National Union used/good mid-1940's (47ma)
6F6G RCA Cunningham used/good 1947 (31ma)
6F6G RCA NOS 1949 (35.8ma)
6F6G RCA NOS 1957 (42.2ma)
6GF5 GE NOS (15 in stock)
