Danish Model 1854 Socket Bayonet, 1854-416

Socket bayonet originally for use on the Prussian (Suhl) manufactured Dornbuchse M-1849 rifles circa 1849-1851, converted and reissued as the Danish Suhler Tapriffel Model 1854.
Unique locking spring designed by Johan Christian Wilken Kyhl, first introduced in 1794. The Kyhl spring catch was used on Danish bayonets from 1794-1860. Serial number "416"; re-issue year is also present "1854". Unit stamped "S.H.V.D.205" on socket barrel (stands for Schleswig Holstein 5th Battalion, Company D, Weapon 416"). These so-marked bayonets are associated with the Schleswig Holstein Rebellion circa 1848-1852.
These bayonets are also known to have been used on their corresponding muskets during the American Civil War, acquired by various agents in Europe from the North and South.
Good condition overall.