S. Marti Medaille de Bronze Black Marble Mantle Clock

The clock is black marble, with a granite face. The information inside the clock is as follows:

S. Marti et cie,  Medaille de BronzeL, Frame No 4370, #57 at bottom of clock.  2 of the 3 screws appear to be marked. The clock is an exposed escapement, jeweled.  The information was obtained by a clock repairman.  The clock weighs approx 50+ pounds.