I took the AT Pro out for a morning hunt at a park in extreme northwest Philly today. The usual clad and junk for the most part but I did find these two coins of interest. The one is obviously a coin-toss coin but I have no idea what the other thing is supposed to be about. I'm kinda racking my brain trying to remember the significance of 1721. Not Jamestown or Plymouth so I'm at a loss. Any ideas? It's obviously not old but it does have a little heft to it. It might have a good amount of copper in it cause it rang up in the quarter range. It's slightly bigger than a quarter and the coin-toss coin is about the size of an old silver dollar. Always fun to find something beyond the mundane.