For example: a Johnny Bench Louisville Slugger Baseball bat made between 1964 - 1972 will have the registered trademark "R" after the words Louisville Slugger, inside the center label. Bats made between 1973-1980 had the registered trademark "R" added to the top of the "d" in the word Powerized.
See Related Links below for the Louisville Slugger Bat Dating Guide for more help on dating your bat.
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