Posted before, but what the heck. Carried all over Texas and New Mexico by great-uncle Billy Standifer, also known as Little Bill, a cowboy, sheriff, and enforcer on the Spur and XIT Ranches in north Texas. The gun appears to have been purchased when he turned 18 in 1875. He "won" at least 7 known gunfights, but lost the 8th in a Winchester duel to Pink Higgins, life long enemy and enforcer on the same ranch in 1902. That's Billy in my avatar in 1891.
See
Billy's Forty-Four for my take on what happened based on the survivor's account, news clippings, and family oral history.