Kyle Kuzma Autographed/Signed Pro Style Baby Blue XL Jersey BAS 31097 The number in the listing title is just an inventory sku for our records and is not the authentication number. This is a custom pro style baby blue XL jersey with sewn on name and numbers that was personally autographed by Kyle Kuzma. Includes a certificate of authenticity from Beckett Authentication Services (BAS) and Denver Autographs.