Louis-Francois Devisme was a well-respected Parisian gunmaker through much of the 19th century and won numerous awards at French and international exhibitions, including the famous Great Exhibition (first World's Fair) in London in 1851, the same year these pistols were made. The rifled barrels have bead front sights, signed "DEVISME" (upper left) and "A PARIS" (upper right) in silver inlay along with silver inlaid scroll patterns, and fluted midsections. The underside of the barrels have "No 1055/DEVISME A PARIS/AN 1851," and the breech plugs have "1055" and "DEVISME." The inside of the locks also have "1055. The locks are signed "DEVISME A PARIS" among the etched and engraved patterns on the exterior, and in addition to the scroll patterns, the locks and furniture also feature a variety of mask designs. The stocks have relief carved scroll patterns on the forends and the fluted wrists. The inside of the forends have "JNI," a marking often found on French pistols with carved ebony stocks in this period. The case lid has engraved brass scroll inlays and a central escutcheon inscribed "LDD", and the interior of the lid has Devisme markings in gilt lettering. The case is closely fitted to the pistols and the included mallet, etched and engraved ball mold with Devisme markings that is embellished en suite with the pistols, convertible screwdriver/nipple wrench, small "DEVISME" marked measure, two round containers (one with spare nipples), and cleaning and loading rods. The compartment in the lower right contains the key and a brass copy of a 1790 dated George III guinea.

See "A."