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DU BOIS & FILS 1785
Watch Winding Specifications

Du Bois & Fils 1785 Watch Logo

DuBois family were originally fabric traders. In 1743 Moïse DuBois started to trade in pocket watches and in 1751 he built his own pocket watch factory in Le Locle. Which is the heart of the Swiss watch industry and home town of many renowned watch brands. His son Philippe focused more and more on the watch business. In 1785, when his three sons joined the company, they renamed it Philippe DuBois & Fils. In the following years, the company grew fast, and earned a reputation in the production of pocket watches. Even famous people, such as the King of Prussia, was in possession of a DuBois et fils watch.

MODEL, DESCRIPTION MOVEMENT / CALIBER WINDING DIRECTION TURNS PER DAY (TPD)
1785
Grande Date DD 4900 Both 650
Grande Prix d'Europe Formula 1 Valjoux 7750 CW 800
Grande Rectangulaire ETA 2671 Both 650
Henry Du Bois Valjoux 7750 CW 800
Le Chronographe 1910 ETA 7751 CW 800
Luna II Valjoux 7750 CW 800
Montre Calendrier 1798 ETA 2892 Both 650
Montre Calendrier 1798 AS 1895
Montre Calendrier Ltd. Ed. DD 9231
Montre Tonneau Both 650
Panorama Grande Date or GMT DD 4500 Both 650
Perpetuelle Valjoux 7751 CW 800
Racing IV Valjoux 7750 CW 800
Regular 1 Valjoux 7750 CW 800
Tonneau Calendrier Both 650
Tonneau w/Grande Date & 2nd Timezone TT651 Both 650
1786
Grande Date DD 4900 Both 650
1787
Concept Two CW 800
DBF001-01 Both 650
DBF001-02 Both 650
DBF001-03 Both 650
DBF001-04 Both 650
DBF001-05 Both 650
DBF001-06 Both 650
DBF002-01 CW 800
DBF002-02 CW 800
DBF002-03 CW 800
DBF003 Manufacture Both 670
Grande Prix d'Europe Formula 1 Valjoux 7750 CW 800
1788
Grande Rectangulaire ETA 2671 Both 650
1789
Le Chronographe 1910 ETA 7751 CW 800
1790
Luna II Valjoux 7750 CW 800
1791
Montre Calendrier 1798 ETA 2892 Both 650
1792
Montre Calendrier 1798 AS 1895 CW 820
1793
Perpetuelle Valjoux 7751 CW 800
1794
Regular 1 Valjoux 7750 CW 800

If ever you are unable to find your watch model in this table, here's an easy way to determine the winding requirements for your DU BOIS & FILS 1785 watches.

  • Select the combined winding mode (CW+CCW) and the minimal number of turns per day (TPD).
  • Place your watch into the winder and check after a few days how accurate your watch shows the time.
  • If it runs behind, it is necessary to increase the number of TPD by one increment.

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