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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)