silver(0.900), ca 1905.
Wear due to age and use. The movement is running at the time of cataloguing, Bukowskis does not guarantee the future function of the movement. Please note that the movement has not been tested for timekeeping accuracy and may need a service at the buyer's expense. Watches have been opened to examine movements therefore no warranties are made that the watches are water-resistant. Potential buyers should inspect each watch to satisfy themselves as to condition. For more information, please read our Conditions of Purchase.
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Henri-Louis and Philippe Auguste Courvoisier founded the company "Courvoisier Frères" in 1842, which later changed its name to "Courvoisier Fils". The company specialised in manufacturing high-quality watches, including an ultra-slim model that was considered at the time to be the world's thinnest watch. This watch was commissioned by the city of La Chaux-de-Fonds as a gift to Wilhelm IV, King of Prussia.
The tourbillon mechanism in this watch was invented and patented by the watchmaker Paul Loichot from Charquemont in France. By inverting the movement, he enabled the balance and escapement to be viewed through the dial, while the escapement was placed in a straight line. The design was patented as Swiss patent no. 30754 in 1905 and registered the same year, on July 4, under the trademark "Mobilis" by Courvoisier Frères.
