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(READ REVIEW) 6SL7GT Tungsol tall bottle gray ribbed plates around 1960 (2.2/1.6ma)
(!!!!!) (Best Single) E81CC=6201=12AT7 Philips Mullard UK SQ NOS gold pins 1974 (9.6/10ma) 1-3% section balance
(!!!!) (Recommended GE Pair) 6FQ7 Zenith by GE NOS 1977 1-3% matched (7.0/7.6m and 6.8/7.5ma)
6007 Amperex NOS (0 in stock)
6021 probably made by EI Yugoslavia NOS 1970's - 1980's (1 pair)
6088 / 522AX NOS (0 in stock)
60FX5 US Brands and Japan NOS (4 in stock)
6100=6C4WA GE 5 star triple mica NOS 1959-1960 (12.6ma) (Premium 6C4)
6111 France NOS 1962 (6.8/7.0ma) (close triode balance) (Same Gm)
6134=6AC7WA GE "5 Star" like new (14ma)
(BEST VALUE) 6136=6AU6WB GE black plate 1960's branded National NOS (6.6ma)
6158=CV4068
(!) 6189=12AU7WA GE black plates "U" getter NOS 1950's rebranded Dumont 1978 (9.8/10.1ma) 1-2% section balance
6189W GE JAN NOS 1973 mica flake inside tube (9.0/9.2ma) 1-2% section balance
6189W GE JAN NOS 1981 (8.4/9.0ma)
6201=12AT7 GE "5 STAR" used/good triple mica "U" getter halo, copper grid posts, gray plates, 1957 (6.2/7.8ma)
(!!) (Recommended Single) 6201=12AT7WA GE "5 STAR" NOS 1970 (8.0/9.2ma)
6286 Raytheon NOS 1959-1961
6350 GE 5-Star like new "O" getter 1962-1963 era (9.6/9.8ma)
6350 Sylvania black plates "U" getter halo used/good 1956, faded printing (8.2/8.8ma)
