Robert Parish Autographed/Signed Boston Celtics 8x10 Photo Beckett 42091 The number in the listing title is just an inventory sku for our records and is not the authentication number. The item pictured is a stock photo unless otherwise noted. This is a Boston Celtics 8x10 photo that was personally autographed by Robert Parish. Includes a certificate of authenticity from Beckett Authentication Services (BAS) and Denver Autographs.