That would be one curious discovery. I would have to dig it all the way up and figure out what it was. Then again, like you say, my face might melt away LOL. I used to discover little things like that when digging at our old house. Nothing so unique, but would find old tools, toys, and assorted items. Not so much where I live now as it is a newer structure and property.
I love a good find! England was even better as you'd find shards of Roman pottery and coins or any number of things from over the centuries!
I would love to live somewhere that old coins is a regular thing to find. I still have a brand new metal detector in my garage that hasn't been used yet. Need to find a place to use it. It is hard becuase so many places are privately owned and nobody wants you to search their land.
Oh we just sold one as we never used it.
Have you seen the British comedy drama The Detectorists? It's so lovely, about two blokes with metal detectors. Sounds weird but it's such a feel good show.
Nope never seen it. I will look it up though if I can rememver later.