I was hunting one of the lesser known areas and I got tons of EO's, a musket ball and this "What's it" It's most likely lead 3.25 inches long x 1.5 wide and about 3/16 thick and has some images scraped into it. Any ideas?
Your "whatsit" is probably a cargo tag similar to a lead seal. These were marked with an insignia of the owner, and the folded to crimp a cloth/burlap bag closed for shipping. It's larger than normal, but I'm pretty sure that was its intended use. Nice find!
it looks similar to a piece I found at the shipwreck I'm working on. mine is a little different but is an 18th century game piece. I managed to identify it through secrets of the dead, the one about blackbeards queen annes revenge.