The tintype which dates back to 1878, depicts Billy the Kid and several members of his gang (which had the coolest name ever) the Regulators, playing cricket outside a Lincoln County building.
The photo was apparently taken after a wedding.
For all you doubters, the photo has been authenticated by a photography expert and a facial recognition expert who has reportedly done work for the National Security Agency and the FBI.
Billy the Kid was also known as William Bonney. He is one of the most famous charachters of the American old West. Though credited with at least eight murders he became a folk hero and an outlaw.