Luke Schoonmaker Signed Michigan Wolverines Mini Helmet Beckett 42739 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 Michigan Wolverines Mini Helmet that was personally autographed by Luke Schoonmaker. Includes a certificate of authenticity from Beckett Authentication Services (BAS) and Denver Autographs.