This bayonet was designed for the Austrian Model 1854 Lorenz Infanteriegewehr Rifle, the first Austrian gun to use the nipple system. It was one of the most accurate short-rifles - and surpassed many long rifles - of its day. These weapons were used extensively by Confederate troops (~50,000) during the American Civil War, and also by the Union to a lesser degree. These can be easily recognized by the diagonal mortise slot in the socket and the four-edged blade, with the width being greater than the height.
These were produced from about 1854 to about 1867.
They use a leather-covered wood scabbard, iron mounts (not shown).

NOTE: The muzzle locking-ring is not correct on this example.