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(!!!!) (Best Pair) 417A Western Electric NOS 1981-1982 (32ma and 31.5ma)
(!!!!) (Best Pair) 417A Western Electric NOS 1981-1982 (33ma and 33.5ma)
(!!!!) (Recommended Pair 1970's) 417A Western Electric NOS 1973-1977 (27ma and 31.2ma)