Johannes Ruegger à Genève, Case No. 5981, 53 mm, 122 g, circa 1815

A gentleman's extremely rare pocket watch with early automatic winding, centre seconds and cylinder escapement
Case: silver. Dial: enamel. Movm.: 1/2 plate movement, early oscillating weight winding movement, three-arm brass balance.

Johannes Ruegger was a watchmaker in Geneva during the first half of the 19th century. He produced watches in gold and in silver, mainly with calendar or repeating work.
Source: "Meister der Uhrmacherkunst" by Juergen Abeler, 2nd edition, Wuppertal 2010, p. 472.