This listing is for one of each size of Scottsdale Mint Silver StackerĀ® Rounds: 2oz, 100g, and 5oz, for a total of 10.215 Troy Ounces of pure silver bullion. This setup makes a great gift or a perfect addition to your collection. Each high relief StackerĀ® Round is comprised of. The rounds stack interchangeably on top of one another for easy storage.