Here is something that I just picked up...for free. What is it?
It is dug, and looks like a colonial-era grenade. Too small to be an artillery shell I would guess. It is about 3 inches in diameter; about 2 pounds; walls are about 1/2-inch thick (at most, hard to measure); fuse hole is 5/8-inch. There is an obvious mould seam all the way around and a raised sprue mark. See pics.
What do you think?