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A French glass dial mystery clock
A French glass dial mystery clock

HENRI ROBERT, PARIS; FOURTH QUARTER 19TH CENTURY

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A French glass dial mystery clock Henri Robert, Paris; fourth quarter 19th century The circular glass dial with silver painted Roman chapters and signed Henri Robert Hger. de la Marine Paris, Horloge Mysterieuse Brevetee the silvered metal counter-balanced hands containing watch movements signed H. Robert A Paris with cylinder escapements and Platinum wedge-shaped counter-weights driven by the centre pinion (the hour hand movement with additional motion-work), the counter-weights revolving thereby upsetting the centre of balance and 'driving' the hands around 16in. (41cm.) high

Lot Essay

Henri Robert began clockmaking in 1867 with his more famous father. The latter, also called Henri (1795-1874), studied under the great master Abraham Louis Breguet (d. 1823) and went on the make top quality clocks, watches and marine chronometers. Later his son Henri became well known for making ingenious mystery clocks; an entry in Tardy Dictionnaire des Horlogers Francais, p. 561 writes...he made some mystery clocks, one in particular where the movement of the hands is due to the displacement of their centre of gravity in the end of the hand

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