This ball is the ultimate special collectible for Celtics fans--a basketball signed by fourteen Celtics players who have had their numbers retired -- Larry Bird, Bill Russell, Dennis Johnson, Tom Heinsohn, Jo Jo White, Satch Sanders, John Havlicek, Don Nelson, Sam Jones, Cedrick Maxwell, Bill Sharman, Ed Macauley, Jim Luscutoff, and Frank Ramsey. Wow! A letter attesting to witnessing the signings by the donor is included.