Manufactured c. 1800 by Swiss-born London gunmaker Durs Egg with a smoothbore Damascus barrel with a fixed blade front sight, dovetailed notch rear sight, "-D. EGG. LONDON-" signed in gold inlay, gold band at the breech, and gold lined vent. "647" is marked on the underside of the barrel, the breech plug hook, on the forend under the barrel, and on the inside of the lock. The lock is signed "D. Egg" and has foliate and sunburst engraving, a large frizzen spring roller, and a sliding half-cock safety that also secures the frizzen. The lock is fired using an adjustable single set trigger. The iron furniture includes a stylized pineapple finial on the trigger guard. The full-length stock has a checkered wrist, and a later horn tipped ramrod is included.