Ancient Throwing Stone or Tool? South Carolina landscape with a diameter of 6

with a diameter of 6 inches at the lip and 2

and I just found it all these  eyes and ears and noses and mouths together pretty striking

Perfect for filling with new powders and tonics

and casting such great shadows

Ancient Throwing Stone or Tool? South Carolina landscape with a diameter of 6I purchased this from a wonderful dealer in New Hampshire whose cabinet of curiosities includes objects decommissioned from museums and science departments as well as gathered from estate collections all over. She didn't know the origins of this stone and neither do I, but it sure looks like a throwing stone to me! If not certainly used as a tool of some sort, with a couple of divets on the bottom one just the right shape for a thumb gripping it.