Official Spalding NBA basketball signed in silver ink on the side panels by five members of the 1981 World Champion Celtics: Larry Bird, Kevin McHale, Robert Parrish, Cedric Maxwell, and Nate Archibald. Accompanied by a letter of authenticity from PSA/DNA. In very fine condition, with a PSA/DNA authentication label affixed to ball. Auction LOA Steve Grad/PSA/DNA and R&R COA.
