This was one of the early center-fire handgun cartridges designed by designer Louis Perrin in 1859. It was internally primed and although the Lefaucheux design predate it, the Perrin design, was the first to be widely adopted. The Perrin cartridge is not interchangeable with the later Galand design. There was an excellent article done by Aaron Newcomer, who is considered the leading expert on these earlier designed cartridges. Erlmeier, Brandt gives a reference number 121, but that is a generic description of the early French thick-rimmed cartridges.