A rare one minute tourbillon, by Courvoisier Frères.
Diameter is 52mm, height is 64mm.
Watch is made according to the patent no. 30754 of Paul Loichot.
The caliber is inverted, movement is equpped with the revolving tourbillon carriage.
Brothers Henri-Louis and Philippe Auguste Courvoisier traded from 1842 on under the name "Courvoisier Frères", renamed to "Courvoisier Fils" in 1882.
Specialising in high quality watches, they were commissioned by the city of La Chaux-de-Fonds to create a watch for the Prussian King William IV; at the time this ultra-flat watch was supposedly the thinnest in the world. The tourbillon movement invented by the Swiss Paul Loichot (which he turned in the case so it would be visible face-sided) was patented for the Courvoisier brothers on July 4th, 1905 under the number 19062 and the name "Mobilis".
The watch is in good condition.
Movement is in good condition and working as it should.
Dial is fine with minor wear.
Solid silver case is in good condition with common period wear.
Overall good condition.
Not for sale