The Galand was an innovative revolver design created by Frenchman Charles Francois Galand and patented in 1868. It is most notable for using a long lever system to eject cartridges by throwing the cylinder and a separate cartridge retention plate forward. It was also one of the early adopters of centerfire ammunition (a .45 caliber cartridge with an unusually thick rim, specifically).
In addition to being licensed for production in England, Belgium, and France, the Galand was adopted in 1870 by the Imperial Russian Navy, and several thousand (including this example) purchased by them. Some were made by the Nagant brothers in Liege, and some by the Tula factory in Russia.