This Autographed Bobby Brown Oal Baseball has been Personally Signed by Terry Bevington, Robin Ventura, Dave Gallagher, Eric King, Ron Kittle, Jeff Torborg, Scott Radinsky, Craig Grebeck, Barry Jones, Phil Bradley, Dan Pasqua, Melido Perez, Wayne Edwards, Ozzie Guillen, Walt Hriniak, Adam Peterson, Ivan Calderon, Donn Pall, Greg Hibbard and Ken Patterson. The signatures of Carlton Fisk, Sammy Sosa, Bobby Thigpen, Sammy Ellis and Ozzie Guillen have been deemed clubhouse versions. of the Chicago White Sox. 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.