Welcome to the Forum. I would have to agree, that that stone, has been worked. I think it would
be pretty common to find nicely rounded stones on the beach, but that dimple on the end throws a wrench into
the mix. I was kind of thinking something like a nutting stone. Bolus is more of a generic medical term for
pills. Do you still have the spear? I'm no expert by any means, but there are plenty here. Gary