The number in the listing title is just an inventory sku for our records and is not the authentication number. This is a authentic full size red metal folding chair that was personally autographed by Bobby Knight. Chairs are metal and came to us in a pack of four, due to the packaging from the distributor the chairs may have some small scuffs and scratches. Includes a certificate of authenticity from Beckett Authentication Services (BAS) and Denver Autographs.