Lefaucheux revolvers were one of the few handguns used by both the North and South during the Civil War that used self-contained metallic cartridges. A total of 11,833 E. Lefaucheux manufactured Model 1854 revolvers are believed to have been imported for use by the Union troops, reportedly in the 25000-37000 serial range. They were also purchased and used by European militaries and are considered to be the first metallic cartridge handguns officially adopted by any national military. This example has the standard bead front sight on a triangular base, hammer notch rear sight, smooth walnut grips, lanyard ring and is marked with the E. Lefaucheux maker name on the left side of the frame and the Lefaucheux trademark crossed revolvers over "LF" followed by the serial number "34538" on the right of the frame.