Not necessarily. Have you tried contacting any museums/archaeologists and forwarding pics?
I'm certain that whatever it is, it's not the only one ever made and certainly there's someone who can confirm it definitively.
I would like to toss something out here. As long as human history has been documented people have made things. Often just for the sake of making it. Call it art, or experimenting or boredom. It?s always possible it was made by someone who was just making it to make it.
I like all of the recent comments. Thanks folks. It was found in a small creek in Virginia waaay far from the coast line. I think it was a lamp or was used to mix up some sort of liquid concoction and carved so it could be poured out.
It does sit nicely and is balanced, despite the rounded/curved bottom.