Alvin Harper autographed photos are a must have for any Dallas Cowboys man cave, home or office. This 8x10 photo has been authenticated by Seller and comes complete with a Certificate of Authenticity (COA) and tamper-evident sticker. The unique Certificate Number can be verified online. This glossy 8x10 photo ships securely in an 8x10 plastic toploader for protection. Relive the moments in Dallas Cowboys history with an iconic shot signed by Alvin Harper. Shop with confidence as this Alvin Harper signature is 100% authentic and backed by Prime One Sports 100% Money Back Guarantee. Prime One Sports is your one stop shop for certified Alvin Harper and Dallas Cowboys signed sports memorabilia. Items ships same day.