Floyd Mayweather Autographed/Signed $100 Bill Slab Beckett 40812 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 Floyd Mayweather Slabbed Real Currency $100 USD that was personally autographed by Flloyd Mayweather. Includes a certificate of authenticity from Beckett Authentication Services (BAS) and Denver Autographs.