It is widely believed to have been buried in 1795 by then-Governor Samuel Adams and Paul Revere.

X-ray examination by conservation specialists at the Museum of Fine Arts, Boston revealed the presence of coins and other items.

It was opened by specialists in a media event in the American gallery of the museum on January 6, 2015.

There was also a silver plate, probably engraved by Revere, and a copper medal depicting George Washington.

[3] The capsule was resealed into the cornerstone in a traditional ceremony on June 17, 2015 by Boston officials.