This Autographed Bobby Brown Oal Baseball has been Personally Signed by Notable Signatures Include: Robin Yount, Don Sutton, Ted Simmons, Ben Oglivie, Jim Sundberg of the Milwaukee Brewers. 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.