The signature is in Black Paint pen. This jersey was signed at a private signing with us and would make a great addition to any Packers collection! The jersey size is XL and all letters and numbers are sewn in. This autograph is guaranteed to be 100% authentic and will include a COA from Beckett Authentication. We have been in business for over 40 years and are frequently featured on Signings Hotline as well as SCD. We specialize in Green Bay Packers, Milwaukee Brewers, Milwaukee Braves, Milwaukee Bucks, Wisconsin Badgers and Hall of Fame autographed memorabilia. Thanks for looking we appreciate your business.