This Autographed Blue Authentic Apex Proline Jersey with the inscription of "HOF 1971" has been Personally Signed by Y.A. Tittle of the New York Giants. This item is 100% Authentic to include a Certificate of Authenticity (COA) / hologram by Beckett Authentication Services. The authenticity can be verified on Beckett Authentication Services website. This is a X-Large sized Jersey. Press Pass Collectibles only offers Authentic Autographs by Y.A. Tittle through Signings, In-Person Signings or Private Collections to include a 100% money back Lifetime Authenticity Guarantee.