Actual ball that Willie Mays hit for his 624th career homerun on April 10, 1971 off of Jerry Reuss at Busch Stadium. Official Spalding National League (Feeney) baseball shows good game usage. Vintage ink notation on panel, "Hit By Willie Mays 624." Comes with an affidavit from former Giants batboy and grandson of Giants groundskeeper from the 1950's to 1980's. This ball was retrieved by the former groundskeeper and then given to his grandson who signed the LOA.