lot of 3 antique farm barn or feed store platform grain scale weights

Lot of three old cast iron weights for an old platform grain scale from the barn feed room or feed store. There are two weights that are marked "2000" in raised characters. They measure about 4 5/8 inches across and 1 1/8 inches thick. There is one weight that is marked "500" in raised characters and it measures about 3 3/8 inches across and 5/8 inches thick.