Custom Replica hand signed Jersey by Green Bay Packers Super Bowl Champ GEORGE KOONCE. The signature is in Black Sharpie with the inscription "SB XXXI". The jersey is size XL and has all letters and numbers sewn on. This item was signed at a private signing with us and would make a great addition to any Packers collection! This autograph is guaranteed to be 100% authentic and will include a COA from JSA authentication.