It’s George Washington’s personal copy of the Constitution and the Bill of Rights and it’s at the Richard Nixon Library in Yorba Linda.
Washington owned the document when he was in office as America’s first president.
His handwriting can be seen in its margins, commenting on executive powers and veto powers belonging to the president.
Security inside the museum is tight and visitors can’t touch the artifact or even use flash bulbs to photograph it.
The artifact was reportedly one of the most expensive items ever sold at auction, fetching about $9.8 million.
The display is set to end April 5.