Genuine 3rd to 6th Century Roman Ballista Catapult/Onager Shot Ball

This is the largest example I have available having acquired a collection of ancient ballista shot balls all of varying sizes, this example is approx 7cm or just under 3 inches in diameter and has been fashioned from sandstone, not truly round it would have been fired from a Onager (also mangonel) was a kind of war machine used in antiquity, especially in the Roman army. Equipped with a “spoon” on a rigid arm, was able to throw stone missiles and burning logs on a long distance. Slightly larger than a tennis ball when thrown with power its effect would have been tremendous. Comes in very good condition, it has odd bits of silver paint on it which should clean off.