![underhammer pinfire pistol made by the French gunsmith, Joseph-Célestin Dumonthier](https://i0.wp.com/aaronnewcomer.com/wp-content/uploads/2020/11/gun1.jpg?resize=800%2C534&ssl=1)
This is a really early underhammer pinfire pistol made in 1849 by the French gunsmith, Joseph-Célestin Dumonthier who lived in Houdan, Seine-et-Oise, France. It follows his 2 July 1849 French patent.
![Dumonthier patent](https://i0.wp.com/aaronnewcomer.com/wp-content/uploads/2020/11/145.jpg?resize=800%2C520&ssl=1)
The whole barrel unscrews from the frame and allows you to load a single 12mm pinfire cartridge.
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