After spending his first 10 major league seasons in San Francisco, Gaylord Perry moved on to Cleveland for four years, and this impressive collection is comprised of win baseballs kept by the Hall of Fame spitballer, many of which are the last out balls from the games. There are 15 from 1973 including one used in the game he registered his 200th strikeout; a ball from April 7, 1973, with an attendance of 74,420, the largest opening day to date; a two-hitter from April 13 and several from shutouts. There are 12 from 1974, including his 200th strikeout of that season and a two-hitter. All show use and are official American League baseballs: 1973 with Cronin as President and 1974 with MacPhail as President.