This Autographed Bobby Brown Oal Baseball has been Personally Signed by Notable Signatures Include: Steve Sax, Gene Lamont, Mike Huff, Bobby Thigpen, Joey Cora, Doug Mansolino, Robin Ventura, Terry Bevington, Jackie Brown, Alex Fernandez, Ron Karkovice, Greg Hibbard, Joe Nossek, Terry Leach, Charles Hough, Kirk McCaskill, Jack McDowell - (CH), & 8 more 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.