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• 03:17, 12 January 2024 Sfoskett talk contribs created page 8-day (Created page with "An '''8-day''' watch or clock is a manually-wound watch that can run for over a week without winding. 8-day watches and clocks are referenced throughout the 19th century, though they were rare and likely not reliable. Alfred Courvoisier of La Chaux-de-Fonds advertised 8-day watches in 1859, Ulysse Perret of Renan produced springs suitable for these watches in 1865, Hattenberg of Le Locle promised a crown-winding 8-day watch in 1875, a...")