https://www.houstonchronicle.com/news/texas/article/Rare-Declaration-of-Independence-copy-1-of-James-12704492.php

This is pretty cool, but the article mentions the holy grail of American missing artifacts - the copy of the declaration that was actually agreed to on July 4. If it were ever to turn up it would be almost literally priceless...but every time I hear these stories about copies being lost for hundreds of years, hidden in weird places and then found, it captures my imagination again.