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6F7G RCA Cunningham like new 1930's
6F7G Sylvania NOS 1940's
6F7G US Brands NOS (15 in stock) (BEST PRICE)
6F7G used/good
(!!) (Best Pair) 6F8G Raytheon black parallel ribbed plates NOS 1940's (8.8/7.8ma and 7.4/7.6ma) (same Gm)
6F8G RCA gray ribbed staggered plates NOS no printing 1950 era (7ma/8ma)
6FA7 NOS
6FC7=ECC89 Mullard branded Philips NOS 1975 (sold out)
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 (2 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)
6FQ7 US Brands used/pull-outs sold as-is (10 for $29.99)
6FS5 GE branded RCA NOS (6.5ma)
6FS5 Sylvania branded Dumont NOS (8.2ma)
