Swedish Socket Bayonet for Chamber loader M/1851 (Navy)
The chamber loader (rifle) M/1851 was used by the Swedish Navy and got produced in 1854, 1858 and 1863 by Carl Gustaf Stads Gevärsfaktori, In addition it got produced for a while by P.J. Malherbe in Belgium.
The socket bayonet, M/1851, that was used with the chamber loader, was also produced in Sweden and Belgium.
Only the markings at the bayonets can be used to identify if the bayonet got produced in Carl Gustav Stad or Belgium.
There might also have been produced bayonets in Husqvarna.