This was introduced in 1859 for the Royal Navy to supply a need for a cutlass and a bayonet in one weapon for the naval rifle of the era, a .577 Enfield cap and ball weapon. This is an A & E Holler example - ie a Solingen blade. There are no UK ordnance marks, so this is almost certainly an American export item.

The hilt could be Dutch or French, the use of tortoiseshell having been introduced to Europe in the late 17th century, probably through Dutch colonial connections. The mid 18th-century German blade (26" long) would have replaced an earlier, shorter, straight, double-edged blade (broken?), probably to enable the weapon's use as a naval hanger.

This iron-mounted sabre, dating from the early years of the Napoleonic Wars, would have been carried by a British officer in a cavalry or yeomanry unit. Singularly, it has a backstrap/pommel in the form of a lion's head, something I have never seen on this pattern in over 50 years of arms dealing. All I need is a good portrait to pin it down!

This is an Austrian pattern, which was adopted by the British army in 1796 as a dress sword for Heavy Cavalry general officers and militia units. It would have been used throughout the Peninsula War and at Waterloo and beyond until about 1820 or so.

These dirks would have been carried by Royal Navy as well as merchant marine officers, even, rather more rarely, by army officers. This classic dirk has a whalebone haft (which, at first glance, might appear to be of walrus ivory, but on closer inspection is definitely whale bone) and iron mounts. The style of hilt, pommel and grip dates it.