Mark Messier Signed New York Blue Hockey Jersey (JSA) Vikings This guarantees that each piece This guarantees that each piece you acquire is genuine and will retain its value over the years A professional style white custom football jersey signed by Bill Bates Inscribed 3x Super Bowl Champs and authenticated by JSA We back our products with a 90 day Satisfaction Guarantee: if you are not completely satisfied with your piece of memorabilia You can read more about all the qualified companies that we use to ensure the authenticity of all our autographs and their different types of certifications on our Authentication Services and Certificates page