This is a typical 18th-century Spanish weapon, designed to be stuffed down a musket barrel when out on a boar hunt or in a military context. Amazingly, it appears to have most of the original scabbard, with the top chape of pressed tin with a decorative motif. The bottom chape is missing.

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.

This is likely to have been made towards the end of the American Revolutionary War (Peace of Paris, 1783) or during the early part of the Napoleonic Wars (starting 1793). This would have been carried by an RN officer or HEIC naval officer, and this example is interesting in having a particularly long (approx 26") blade.

This hanger, almost certainly of military or naval origin, is an exceptionally clean example with a 24" sawback blade and a staghorn grip. Typically they would have been used in the Seven Years War, as well as in the US War of Independence. It would have been carried in a brass-mounted leather scabbard, now sadly lacking.

This is the classic Forestry cutlass worn by senior Foresters (denoted by the ivory grip and the gold/green knot) across Europe from the early 18th century onwards. They continued in use through the Weimar era and Third Reich, only latterly losing the by-knife. Lower ranks wore cutlasses with a stag horn grip and a plain green knot.