Brass percussion capper, with lanyard ring stamped “KM”. These brass cappers were manufactured in Germany by Weber and Schulties of Frankfurt for some of the 3,450 Colt Model 1851 Navy percussion revolvers that had been confiscated by Prussian Customs in August, 1855. They were a shipment that had been ordered by the Russian government for use in the Crimean War 1853-56. After being sold at auction in Prussia, about 900 of the Colt Navies were issued to the Royal Prussian Navy by 1859 1860. These very rare Colt Navies are now known as the Kreigsmarine Colts.