Well... I guess I better come clean, so to speak. "I" am not the finder of this artifact, but I didn't want to sound like the guy who finds something and then says, "My grandpa gave it to me...", and I didn't want to explain the story behind the artifact. Sorry for lack of disclosure -- I didn't think it would change anything.
Anyhow, this item was found thirty years ago and has been kicking around my coworkers garage. He cleaned it when he got it, couldn't find anything interesting about it, so it ended up being a pet water bowl, etc. When I told him I'd like to see it, he cleaned it up and brought it in.
It was found in NE Utah, and it was on the surface.