This is an official R&A Member's badge from the 2000 Open Championship at St Andrews that is autographed by three-time Open Champ Jack Nicklaus. Jack Nicklaus famously won two of his Opens at St Andrews - the 1970 and 1978 Open Championships. 

The 2000 Open Championship was one of the most important golf tournaments in history, with Tiger Woods decimating the field in route to his 3rd consecutive Major victory. This badge has been authenticated and encapsulated by PSA. Jack Nicklaus' autograph was also previously authenticated by JSA, and is affixed with a JSA authentication sticker.