Woolworth balls are NOS. There is only one used Spalding ball. The product is a set of vintage Spalding and Woolworth golf balls. These golf balls are of a bygone era, adding a nostalgic touch for golf enthusiasts with a love for vintage equipment. The fact that they are from well-known brands like Spalding and Woolworth adds to their collectible value, making them a unique addition to any golfer's collection.