This Hal Steinbrenner Autographed New York Yankees 100th Anniversary Rawlings Official Major League Baseball in Display Cube comes with a Certificate of Authenticity from Seller. The product has been personally hand-signed by Hal Steinbrenner. Prime One Sports is an online leader in authentic Hal Steinbrenner signed memorabilia. Add a unique signature to your New York Yankees Collectible collection. Order ships out within 1-2 business days.