(!!!!!) (Recommended Pair) 403B Western Electric NOS "D" getter 1969 (5.5/5.3ma) 1-3% matched
(!!!!) (Recommended Pair) 403B Western Electric NOS "D" getter 1969 (5.7/5.6ma) 1-2% matched
(!!!!) (Recommended Pair) 403B=6AK5 Western Electric NOS "D" getter 1969 (4.8/4.5ma)
(!!!) (BEST PAIR) GB-5654=6AK5 Sylvania Gold Brand Gold Pins NOS 1960's (9.3ma and 9.9ma)
(!!!) (Best Single) 403A Western Electric NOS "D" getter 1957 (8.7ma)
(!!!) (Single) 403A Western Electric NOS "D" getter 1957 (5.7ma)
(!!) (Best 403B Single) 403B=5591=6AK5 Western Electric NOS "O" getter halo 1958 (8.2ma) (special quality)
(!!) (Best Single) JW-6AK5 Western Electric NOS "D" getter 1953 (6.2ma)
(!!) (Single) 403B=6AK5 Western Electric NOS "O" getter halo 1969 (5.3ma)
(!!) 403A=6AK5 Western Electric "D" getter like new 1966 (7.5ma)
(!!) 403A=6AK5 Western Electric NOS "D" getter 1971 (6.8ma)
(!!) 403A=6AK5 Western Electric NOS 1974 (6.6ma)
(!!) 403A=6AK5 Western Electric used/good 1970 (8.2ma)
(!!) 403B=6AK5 Western Electric NOS "D" getter 1969 (6.5ma)
(!!) 403B=6AK5 Western Electric NOS "O" getter 1980 in 1979 box (5.8ma)
(!!) 6AK5 Western Electric NOS "D" getter 1956 (7.0ma)
(!) JHS-6AK5 Sylvania NOS 1954 (5.5ma)
