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Form watches became popular in the 1600s, with cases shaped like animals and objects. Religious themes were especially popular. Although there were few technical improvements, watches became more like pieces of jewelry. It wasn't until 1704 that the first rubies were used in watch movements to create more accurate time pieces. By 1750, enamel was used on watch dials making them more visible in low light. The first self-winding movement was invented in 1780, by Abraham Perrelet, and in 1820 Thomas Prest registered a patent for a self-winding watch. In America, in 1809, the first watch manufacturer was Luther Goddard of Shrewsbuy, Massachussetts. In 1848, Louis Brandt opened a workshop in La Chaux-de-Fonds which was to later become the Omega Watch company. It was the Americans, around 1850, who were first to go into mass production, with mixed results, the main companies being Waltham, Elgin and Hamilton.
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