Although unused, the balls appear to be slightly discolored in some areas. I don't know anything about golf, so I'm afraid I can't answer any questions. There's also something like a pin in the box. Please check the photos. I'm selling these because I don't plan to use them. I hope someone who uses them will buy them. The box also has stains. I look forward to your purchase if you don't mind. Number of golf balls...6-8