Genuine 3rd to 6th Century Roman Ballista Catapult Shot Balls

Here are three varying sized Ballista shot balls from a small collection recently acquired, used in both machines like onagers and catapults to hand thrown from leather slings, they were fashioned from sandstone and have a hand hewn appearance, the largest measures 6cm or 2.25 inches and the smallest is 3.5 cm or 1.5 inches, a rare opportunity to own pure ancient history.