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(!!!) (Single) 12AT7 GE gray plate NOS 1961 (11.4/14.4ma)
(!!!) (Single) 12AT7 GE gray plate NOS 1975 (8.4ma/6.8ma)
(!!!) (Single) 12AT7 GE gray plate NOS 1981 (8.4ma/6.8ma)
(!!!) (Single) 403A Western Electric NOS "D" getter 1957 (5.7ma)
(!!) (Best Pair) JAN-CHS-6SL7WGT Sylvania brown base "square getter halo" like new faded printing (2.4/2.6ma and 2.4/2.4ma) 1-3% matched
(!!) (Best Single) 7AF7 Sylvania branded Hytron NOS round black plates NOS 1952 (9.6/9.4ma) 1-3% section balance
(!!) (Best Single) JW-6AK5 Western Electric NOS "D" getter 1953 (6.2ma)
(!!) (Best Value Single 1953) 12AU7 Sylvania black plates "D" getter used/strong 1953 no printing (9.6/11.8ma)
(!!) (Recommended Single) 5Y3GT Hytron NOS 1951 (56/40 and 60/40)
(!!) (Single) 403B=5591=6AK5 Western Electric NOS "O" getter halo 1958 (5.0ma) (special quality)
(!!) (Single) 403B=5591=6AK5 Western Electric NOS "O" getter halo 1958 (5.2ma) (special quality)
(!!) (Single) 403B=6AK5 Western Electric NOS "O" getter halo 1969 (5.3ma)
(!!) (single) 6SL7GT RCA NOS black plates gray coated glass 1959 (2.0/1.7ma)
(!!) (slightly microphonic) 12AU7A Raytheon black ribbed plates "D" getter halo black coated glass 1951 (8.8/9.6ma)
(!!) (slightly microphonic) 6SL7GT RCA NOS 1950 (2.2/2.3ma) 1-2% section balance
(!!) 403A=6AK5 Western Electric NOS 1974 (6.6ma)
(!!) 403B=6AK5 Western Electric NOS "O" getter 1980 in 1979 box (5.8ma)
(!!) 6SN7GTB Tungsol black plates tall bottle "U" getter used/75% 1950's (6.2/6.0ma)
(!!) 6V6GT Philco by Sylvania tests like new 1957 (42.2ma)
(!) (Best Single) 6K6GT GE NOS 1955 (43ma)
