This revolver was manufactured in 1858 and features the classic "Gustave Young" style scroll engraving with beaded backgrounds and animal mask and foliate accents popularized by Gustave Young and other German trained engravers working for Colt in the 1850s and 1860s. There is an eagle mask above the loading lever screw on the left and another by the hammer screw on the left. The "COLTS/PATENT" marking is inscribed among the scrollwork on the left rather than the usual stamped marking, and the presentation style "Saml Colt" inscription is on the barrel in place of the standard barrel address. The revolver has the standard sights and matching visible serial numbers. The factory apostrophe style marking designating the revolver for engraving and/or special finishing is marked above or below the main serial numbers. The back strap is neatly inscribed with "Camilla H McKeen". It is notably rare to find a woman's name inscribed on an antique Colt. Unfortunately, the lady's identity has not been recorded. She may be Camilla Hammond McKean (nee Moore) (b. 1809) of Baltimore, Maryland, who married William Swan McKean. Their daughter was Camilla Hammond McKean (1830-1889).