Your clock is French, circa 1870-1880. It would be more accurate to call it a mantle clock, as a carriage clock is designed to be portable, for travelling. To attempt to identify the manufacturer, it would be useful to have a picture of the movement without the bell for the strike, which can be unscrewed, as there may be a stamp under it. The mark you mention is probably the name of the finisher of the movement, followed by the pendulum length or perhaps a serial number. Your clock looks in need of a complete overhaul as the movement appears dirty. Looking up clock restorers in your area seems the way to go, unless you would like to learn yourself.