You know how winning sports teams get their championship rings the season after their big victories? The same thing happens in golf sometimes, too.
At Doral last week, Titleist made a special presentation to Webb Simpson to commemorate his victory in the 2012 U.S. Open. Titleist Tour rep Mac Fritz presented Simpson with a gift box containing, among other things, a golden Pro V1x ball. It's a little difficult to see in this photo, but the ball is the shiny object in the left side of the box.
The golden ball is one of the coolest winner's gifts in golf, along with the gold putters that Ping awards its players who win events on the big tours. All the winners make plenty of money at this elite level of golf, so they cherish their trophies and other commemoratives more than anything. So it's cool to see the equipment companies create these keepsakes to mark the biggest achievements of their players.