This is an official 2003 Open Championship flag that is autographed by 18 Open Champs, including Seve Ballesteros, Jack Nicklaus, Arnold Palmer, and more. Here is a complete list of the Open Champions autographs on this flag:
Seve Ballesteros
Jack Nicklaus
Arnold Palmer
Gary Player
Lee Trevino
Tony Jacklin
Mark O'Meara
Bob Charles
Nick Faldo
Ben Curtis
Ernie Els
Tom Lehman
Sandy Lyle
Nick Price
Justin Leonard
Todd Hamilton
Paul Lawrie
Greg Norman
Certificate of Authenticity from Green Jacket Auctions (GJA)