There was also an underhammer pinfire version of this gun (maybe modified) that took a weird shaped pinfire cartridge (to fit in the openings of this gun) made by Chaudun who made the earlier cartridges and then took over ownership of the guns as well around 1839 or so.


[Linked Image from photos.smugmug.com]


Clock Guns, Pauly Guns, Pinfire Guns and Pinfire Cartridges