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Unknown, Paris, France, 1786. Single train 14 day duration, tic-tac, one-half second pendulum. Movement with front gilt plate surrounded by three bronze figures of Atlas holding a glass celestial sphere; within the sphere a clockwork-driven orrery with plants to Saturn including working Earth-Moon system.  

Click on photos for additional details. Restoration photos page one, disassembly, and page two the restoration. A discussion that compares and contrasts this example with seven others I have seen proving that the construction of clocks, even very expensive and specialized examples such as this one was already a well developed production model with a well defined division of labor.

 

 

 

 

 

 

 

 

 

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