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(!!!) (Recommended Pair) 6FQ7 GE NOS 1970's (7.2/9.5ma and 6.5/9.4ma)
(!!!) (Recommended Pair) 6FQ7 Sylvania NOS 1970's same build (6.4/6.8ma and 6.4/6.4ma)
(!!!) (Recommended Pair) 6GK5=6FQ5A Sylvania rebranded Raytheon NOS (11.0ma and 11.4ma)
(!!!) (Recommended Pair) 6GK5=6FQ5A Toshiba Japan rebranded Raytheon NOS (8.7ma and 9.7ma)
(!!!) (Recommended Single) 12AU7A GE NOS 1963 (8.6/9.5ma)
(!!!) (Single) 6100=CV4058=6C4 Mullard box plate NOS 1973 (9ma)
(!!!) (Single) JAN-6C4WA GE NOS 1972 (8.8ma)
(!!!) 12AU7A GE "U" getter like new 1959 (10.8/10.2ma)
(!!!) 12AU7A GE "U" getter low hours/tests like new 1957 (10.0/8.8ma)
(!!) (Best Pair) 6GK5=6FQ5A Hitachi Japan rebranded Raytheon and GE NOS 1970 era (9.6/10ma)
(!!) (Best RCA single) 5965 RCA IBM black plates triple mica "D" getter like new 1958 (12.0/12.2ma)
(!!) (Best Single) 5965 Sylvania NOS 1960's (21/19ma)
(!!) (Best Value Pair) 6FQ7 GE branded Amperex and Westinghouse NOS 1970's (6.4/7.4ma and 6.4/7.4ma) 1-2% matched
(!!) (BEST VALUE SINGLE) 12AU7A RCA clear top used/good 1960's (8.0/9.4ma)
(!!) (BEST VALUE) 6550A GE stapled plates NOS around 1980 (119ma) (nice single)
(!!) (Recommended Pair) 6GK5=6FQ5A GE NOS 1968-1981 (10.4ma and 11.2ma)
(!!) (Recommended Single) 6550A GE branded Westinghouse stapled plates NOS 1980 era (129ma)
(!!) (Recommended Single) 6550A GE rebranded RCA stapled plates NOS 1979 slightly tilted glass (136.5ma)
(!!) (Single) 5965A GE 5-Star NOS 1969 (14.8/11.8ma)
(!!) (Single) PCC88=7DJ8 Philips Holland 1973 (9.5/10.6ma)
