This clock is based on a dual-patinated 18th century original, an example of which is part of the collection "Au Balancier de Cristal" (see Tardy, La Pendule Française, Paris, 1974, Vol. II, p. 388). A similar clock, circa 1775-1790, with movement signed by Lepaute, is at the Metropolitan Museum of Art, New York (Bequest of Ogden Mills). Founded by Jean André Lepaute, the firm was one of the most distinguished clockmakers of the 18th century. Incorporating horizontal numeral rings into their clocks was apparently a specialty of the Lepautes.