This 5x7 photo was signed at a public signing in the 90's and a copy of a photo from the signing is included. 

Willie Mays, nicknamed "The Say Hey Kid" spent the majority of his career as a center fielder with the New York and San Francisco Giants before finishing with the New York Mets. He was elected to the Baseball Hall of Fame in 1979, his first year of eligibility.  Mays won two MVP awards and shares the All-Star record of most All-Star Games played (24) with Hank Aaron & Stan Musial.  Mays ended his career with 660 home runs, third at the time of his retirement, and currently fourth all-time. He won a record-tying 12 Gold Gloves starting the year the award was introduced six seasons into his career.  Willie Mays is considered the finest five-tool player ever, and the overwhelming consensus of many surveys and other expert analyses carefully examining Mays' relative performance, have led to a growing opinion that Mays was possibly the greatest all-around baseball player of all-time.