Greedy Williams Signed Autographed Cleveland Browns Riddell Speed Replica Full Size Helmet . This licensed Helmet has been signed by Greedy Williams. The autograph has been certified authentic by PSA/DNA and comes with their authentication sticker and matching certificate of authenticity that can be verified online. This signed Helmet is a great gift idea for any Cleveland Browns fan or memorabilia collector. Check out other memorabilia at???Prime One Sports.com.???Shop with confidence as all signatures are 100% authentic. Prime One Sports backs this product with our 100% Money Back Guarantee. .