DU BOIS & FILS 1785
Watch Winding Specifications

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.

SEE OUR WATCH WINDERS

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DU BOIS & FILS 1785
Watch Winding Specifications

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DU BOIS & FILS 1785 Watch Winding Specifications

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DU BOIS & FILS 1785
Watch Winding Specifications