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(!!!!) (Best Pair #1) 6L6GC GE NOS 1980 same date codes (70ma and 70.6ma) (Same Gm)
(!!!!) (Best Pair #2) 6L6GC GE NOS 1980 same date codes (73.0ma and 74.3ma) (close Gm)
(!!!!) (Best Pair #3) 6L6GC GE NOS and like new 1980 (68.7ma and 69.0ma)
(!!!) (BEST PAIR) 7247=12DW7 CBS gray ribbed plates NOS 1960 (0.9/8.8ma and 0.9/8.6ma) 1-3% matched
(!) (Best Single) 7247=12DW7 Amperex Globe Logo by Matsushita Japan NOS 1967 similar sound to Mullard (1.5ma and 11.6ma) (High mA and Gm)
