Larry Bird Signed Boston Celtics Framed Mitchell & Ness Green L Jersey BAS 36986 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 professionally framed Boston Celtics Mitchell & Ness green size L jersey that was personally autographed by Larry Bird. This jersey measures approximately 42" x 34" and includes a certificate of authenticity from Beckett Authentication Services (BAS) and Denver Autographs.