An American wooden bat. Marked, Louisville Slugger Hillerich and Bradsby Co, Made in USA, Powerized. Signed with etching, Henry Aaron Genuine Louisville Slugger. Henry Louis Aaron, 1934 to 2021, nicknamed Hammer or Hammerin Hank, was an American professional baseball right fielder who played 23 seasons in Major League Baseball MLB, from 1954 through 1976. One of the greatest baseball players in history. American Baseball Bats, Sports Memorabilia, and Collectibles.