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(!!!!) (SINGLE) 6973 RCA branded GE gray plate NOS 1974 (40ma)
(!!!) (Best Pair #2) 6973 RCA black plate NOS and like new 1959 (44ma and 42.5ma)
(!!!) (Best Pair #3) 6973 Sylvania and Sylvania branded GE gray plate NOS 1970's - 1980 (60ma and 58ma)
(!!!) (Best Pair) 6973 Sylvania branded GE gray plates NOS 1970 (44ma and 46ma)
6973 RCA black plate used/good 1950's (34ma)
6973 RCA gray plate used/good 1970 era (56.5ma)
