Important chased and gilt bronze clock based on a model by Robert OSMOND (model book 42) and Julien LEROY. Body in the form of an antique urn flanked by lion's heads and paws, resting on an oval pedestal decorated with ribboned laurel twists on a quadrangular base with amatized background adorned with oak-leaf garlands, topped by a pine-cone cushion. White enameled dial with Roman and Arabic numerals, signed Julien LEROY in Paris, with ironed hands. Later movement. Re-gilded. Late 18th/early 19th century. Slightly damaged and missing. Height : 58 cm Charles Nicolas Dutertre, Master in 1758, was the son of Nicolas-Charles Dutertre and worked in his father's workshop until 1772. The Dutertre family was an important watchmaking family, spanning three generations and including eight representatives. The founder was Jean Baptiste 1er, who practiced on the Quai des Orfèvres and designed a new escapement for the French Navy. In the 18th century, three famous collectors owned clocks of this model. The first is mentioned in the after-death sale of Ange-Laurent Lalive de Jully in 1770. It topped the cartonnier of Baumhaeur et Caffieri's famous flat desk in the Château de Chantilly. A second identical clock belonged to Louis XV's minister, the Duc de La Vrillère. In his 1777 death inventory, it is described in the bedroom of the Rue Saint Florentin hotel, now the U.S. Consulate. A third example is described in 1787 in the after-death inventory of financier Beaujon, in his Paris hotel, now the Palais de l'Élysée. Robert Osmond was appointed juror of the foundrymen in 1756. A friend of Caffieri, he was influenced early on by the neoclassical movement. His workshop flourished in the 1760s, and was succeeded by his nephew Jean-Baptiste.