This Miami Dolphins image show Mark Brothers Clayton and Duper #83 #85 and Dan Marino #13. This a gorgeous item to add to your collection!!. Duper signed this picture with BLUE sharpie. Photo measures approximately 11X14. This photo was signed at a V.I.P Signing Event held at Sinbad Sports. Shop with confidence as this product has been authenticated by JSA and comes complete with a Certificate of Authenticity.