.75 caliber, 42″  rifled barrel with with folding ladder rear sight.  Convex lock converted to percussion.  Full length stock with mulitple inspections.  It was most likely a conversion performed in Belgian and sold to Austria or one of the German States.   The stock also has carved onto the left side ” M /WAR” near the cheek-piece.    In fine overall condition with excellent inspections and stampings.  Nice bore and mechanically sound.