This is a rather interesting variation on the 1827 Naval sabre, one that came about in the later half of the 19th century and as you would expect from the name these were very popular among Scottish Officers in the Royal Navy. These blades are double fullered straight spear pointed sabres that are essentially British military broadsword blades. This sword came from above a pub fireplace on the south coast of England with a story that it was present at the Battle of Pacocha fought between Britain and Peruvian Rebels though I have not been able to verify.
The sword has the damage to one side on both the blade and shagreen to be expected from being hung over a fireplace. This sword can be yours for £265 or best offer.