I just purchased this French mantel clock at an auction last night for $20.00!
It is a black wood case with what I believe to be mother of pearl inlay and perhaps some tortoise shell. The movement was pretty loose when I bought it and the dial is badly cracked with the "spider web" effect. The dial and movement are marked: Marc Paris 1324 and then what looks like a fraction. I can't make it out. Also the clock was serviced in 1930. The repair person marked his initials into the front plate of the movement. Signed the inside of the case as well affixed his business sticker inside and signed the back door of the clock. His name is everywhere on this clock. If anyone knows anything further on this clock such as production dates, authenticity, etc please post!