Featured is a Bill Gates signed Source Code: My Beginnings leather bound book. This book has been hand signed by Gates and comes with the PSA/DNA hologram and letter of authenticity. This book has been fully bound in leather and has 22kt gold deeply inlaid on the hubbed spine. This book features sewn pages and a satin-ribbon page marker. This book would make a great addition to any sports memorabilia collection! SPECIFICATIONS Autographed By: Bill Gates Team: Sport: Authentication: PSA/DNA Authentication Services