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Justin Vuillamy autres horlogerie
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Chronometre, Date, Central second
Date Code.znr Full plate movement with pierced and engraved balance cock, engraved regulation pointer in the form of a serpent, cylindrical pillars, fusee with chain and maintaining power, cylinder escapement, seconds stop/start lever in the side, enamel dial with white enamel dial with Roman numerals and outer Arabic minutes ring, gold spade hands with blued steel centre seconds, later silver case with hinged front and back bearing London Hallmarks for 1851.51mm.