The Jarre Harmonica pistols were developed in the late 1850s in Paris, France. This example is loaded via a 10-round horizontal block that automatically advances between chambers when the trigger is pulled. The action is double action only. This arrangement represented a significant increase in on-hand firepower for the era, even when compared to other repeating pinfire firearms. However, the design would not have been very practical to carry loaded. This example has a smoothbore barrel marked "Jarre Brevete Paris" and with a partially obscured maker's mark near the breech. The pistol is equipped with left side offset blade and notch sights. "529" is marked on the bottom of the barrel, underside of both grip panels and right side of the magazine by the release.