This is a great piece, a French straight sabre made in the Manufacture d'Armes de Saint-Étienne, one of the French state arms factories.
The sword is of slightly larger proportions than the more common 1845 sabre with a straight double fullered blade and incredibly crisp cast guard bearing arabesque floral designs.
Interestingly there is a dappled pattern on the opposing side to the St Etienne stamp where a mark may have been obscured. The scabbard is missing the drag.
This sword can be yours for £275