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 JSA (James Spence Authentication). We have been in business for over 30 years and are frequently featured on Signings Hotline as well as SCD. We specialize in Super I&II Green Bay Packers as well as 1982 Milwaukee Brewers autograph memorabilia. Thanks for looking we appreciate your business.