6CS7 Tungsol NOS black plates 1960's (21/10ma) (internals like Sylvania)
6F7G RCA Cunningham like new 1930's
6F7G Sylvania NOS 1940's
6F7G US Brands NOS (15 in stock) (BEST PRICE)
6F7G used/good
6F8G RCA gray ribbed staggered plates NOS no printing 1950 era (7ma/8ma)
6FA7 NOS
6FD6=6ES6 NOS
6FG7 US Brands NOS (6 in stock)
6FH5 US Brands NOS (2 in stock)
6FH8 US Brands NOS (7 in stock)
6FM7 GE branded RCA used/tests like new
6FM7 GE NOS (5 in stock) (Dennis Had Inspire preamp)
6FM7 Sylvania black plates NOS (3 in stock)
6FM7 Sylvania used/good no printing
6FM8 NOS (8 in stock)
6K6GT RCA used/good 1954 small hairline crack in base (35ma)
6L6 RCA metal can NOS 1940's (66ma)
6N7 RCA NOS 1956 (2.8/2.9ma)
6N7 RCA NOS 1973 (2.3/2.3ma)
