Louis XVI period clock "Les Arts et les Sciences" signed Piolaine

Louis XVI period clock, in gilt bronze and white marble, representing Arts on one side and Sciences on the other, and surmounted by a cherub.

Mercury gilding. 

Original movement and in working order.

Clock signed Michel-François Piolaine, master in 1787, signed Piolaine à Paris. This kind of clocks can be found under the name of "pendules aux maréchaux" without knowing why.