A good late 19th century French automated horizontal steam boiler and piston engine compendium

France, a gilt and nickel plated, automated horizontal steam boiler and piston engine compendium, the machinery mounted to a cast floor with crosshatched surface resting on a black slate base with gilt feet, boiler fitted with an eight day time only clock with cylinder escapement and aneroid barometer, both with silvered dials and flanking a central thermometer with silvered scale and surmounted by a working piston engine, the flywheel, piston and governor powered by a movement concealed in the cylinder, the valve front with plaque marked "D. H. Depose", together with a purpose made Lexan case, and a bit of information about the family that owned the piece

11 x 11.25 x 5.5 in
Condition Report: slate with a few tiny flakes, boiler lacking the majority of the nickel plating, gilt surfaces lacking plating, minor verdigris above the barometer, both dials with tarnish, time dial numerals repainted, lacking the valve screw that starts and stop the motion, that position now occupied by a makeshift gauge, both movements running, motion of the piston engine a bit sluggish, Lexan case with scratches and abrasion. Youtube videos of automation available at https://youtu.be/Ht7HYEPD8GM and https://youtu.be/-Je886-rI3k, ACCESSORIES: Two Winding Keys, Paperwork, Lexan Case, circa 1890