Here is a fine collection of (19) team signed baseball from a nearly three-decade span, 1978 to 2002, when the NY Yankees produced six World Championship teams. - 1978 World Series Champs, Official AL (MacPhail) with 19 signatures - 1979 Spalding Yankee Souvenir with 24 signatures - (4)1980 Official AL (MacPhail) with 34, 22 & (2)15 signatures - (5)1984 Official AL (3- MacPhail with 18, 26 & 15 signatures), (2-Brown with 14 & 20 signatures) - 1985 Official AL (Brown) with 25 signatures - 1986 Official AL (Brown) with 20 signatures - 1990 Official AL (Brown) with 26 signatures - Circa 1992 Rawlings Official League with 15 signatures - 2001 World Series Champs, Official World Series (Selig) with 20 signatures - Yankee Legends on 2001 Official World Series (Selig) with 20 signatures - 2002 Official Major League (Selig) with 17 signatures - Official American League (Budig) signed by Don Larsen (ss) with WS perfect game inscription "10-8-56" Legends include Jackson, Ford, Larsen, Berra, Hunter, Guidry, Perry, Nettles, Randolph, Dent, Murcer, Mattingly, Niekro, Winfield, Hernandez, Rivera, Torre, O'Neill, Posada, Jeter, Williams, Gossage, Clemens, Mussina, Wells and many more. Please be aware, as is typical with the era, a small number of the signatures on the team signed baseballs are clubhouse and not actual player autographs.