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(!!) (Recommended Pair) 12HG7=12GN7A Sylvania NOS 1970 era (42ma and 43ma)
(!!!) (Best Pair #4) 6J5GT Ken Rad black ribbed plates NOS 1942 (7.2ma and 7.2ma) 1-2% matched
(!!!!) (Best Value Pair) 5842Q Raytheon NOS 1983 (19.2ma and 19.5ma) 1-2% matched
(!!!!) (Best Pair) 5842Q Raytheon NOS 1983 (27ma and 29.5ma)
(!!!!) (Best Value Pair) 5842Q Raytheon NOS 1983 (20ma and 21ma)
(!!!!) (Best Pair) 5842Q Raytheon NOS 1983 (35ma and 37ma)
(!!!!) (Best Pair #2) 5842Q Raytheon NOS 1983 (23ma and 24ma) 1-3% matched
(!!!!) (Set of 10) 5842Q Raytheon NOS 1983 (10 tubes for $279.99) (all test between 19ma-24ma
(!!!) (Best Pair) JRP-5687WA and JAN-5687WA Raytheon bronze plates tests like new 1964 era faded printing (33.4/36.4ma and 33.5/33.0ma)
6GK5=6FQ5A Sylvania NOS (10ma)
6GK5=6FQ5A GE branded RCA NOS (17.4ma)
6GK5=6FQ5A GE NOS (9ma)
(!!!!!) (Best Overall Pair) 6J5GT Ken Rad black round plates NOS 1942 (10.5ma and 10.2ma) 1-3% matched
(!!) (Best Value Single) 12AT7WA Raytheon NOS black plates - triple mica - O getter halo 1975 era like new (8/12.6ma)
(!!!) (Best Single) JAN-12AT7WA Raytheon NOS black plates - triple mica - O getter halo 1968 (13.8/13.4ma)
(!!!!) (Pair) 6J5GT Sylvania lightning logo NOS 1945-1946 (7.6ma and 7.4ma)
(!!!!) (BEST PAIR #1) CK-5687WB Raytheon black plates 1960's (Audio Note, Manley, Modwright) (33/34ma and 33/34.2ma) 1-2% matched
(!!!!) (Single) CK-6072 Raytheon triple mica black plates "O" getter halo 1962 low hours/like new (2.2/2.0ma)
(!) (SINGLE) JAN-CRP-5755=420A Raytheon clear top NOS 1965 (1.3/1.5ma)
(!) (SINGLE) CK-5755=420A Raytheon clear top NOS 1960's (1.4/1.3ma)
