This early model 1854 revolver was manufactured by Eugene Lefaucheux between 1858 and 1860.
It was either manufactured as or conferred to work with centerfire cartridges, such as the Perrin, or potentially the so-called Rafael cartridges
Mechanically it functions great, and has the extraction rod which is missing on so many of these. It is missing the loading gate, though it has the screw to where you may be able to replace one from a parts gun.
Overall, it’s in ok condition and is especially unique given its earlier serial number and the center fire aspect.