Brass hilt cast in one piece with D form guard and ribbed grip. 30" curved broad fullered blade with crisp ordnance marks at the base. The back marked Mfure Armes Imp… Couloux Freres. The date obscured but appears to be 1811. The imperial designation is clear and definitely dates this example to Napoleons reign. Hilt shows good soft mixed patina with a few minor abrasions. Blade quite smooth with surface patina and two small bruises along the back at the forte. Rare.