This helmet was autographed by Mariano Rivera and comes with Tristar COA. Authentication can be verified on Tristars website, the helmet features a tamper proof Tristar Hologram. This is a limited edition item created exclusively for TBM Mini Helmets and is numbered to /24 .This helmet also comes with our 100% satisfaction guarantee. This is a stock item, you will receive a helmet in similar condition with a good autograph (no smudges or smears).