Keep looking, Don't give up. Read up where others have possibly found artifacts, and study what type of areas that artifacts can be found. Never give up, it can be a rewarding hobby. Good Luck!
Hi! And Welcome!
That’s a very weird piece. I’m not sure either way. It’s just too far out of the norm from what we see.
Could be something though. Nantucket is a promising place to search.
Clearer photos may help.
Keep looking, Don't give up. Read up where others have possibly found artifacts, and study what type of areas that artifacts can be found. Never give up, it can be a rewarding hobby. Good Luck!