A rare sterling silver key pass that allowed the bearer entry into New York Giants games at the Polo Grounds during the 1921 season. The inscription on the key reads, "The Giants welcome you to the Polo Grounds - Chas. A Stoneham Pres." The reverse side of the key notes that the bearer is E.W. Martin and the key is number 47. 1921 was a good year to have a season pass to Giants games as the team finished the regular season with a record of 94-59 and won that year's World Series over the rival New York Yankees.