An important watch exemplifying Breguet's genius both from the esthetic as well as the technical point of view. The elegant dial design is still used for wristwatches 180 years later. The balance jewels, which are of sapphire, are made of a single piece.They are pierced only half-way through, so as to form both the pierced jewel and the cap jewel at once. Furthermore, they are friction-fit! Today, this is common practice in almost all wristwatches, but at the time, when jeweling was far from a common practice, this was unheard-of. The balance is made of two laminae of steel and a special silver/copper alloy which was apparently invented by Breguet and employed in his best watches, including the perpetuelles. Each of its 3 arms is terminated with a block for poising “in the raw”, the Breguet counterpart of the English “winged balance”. The safety feature on the balance which assures that it will not become stuck behind the wrong side of the fork during a jerky movement is very unconventionally achieved by a roller that looks like his famous ruby cylinder and is mounted in the same way. The pallet fork is equally impressive, well calibrated not to be confused with counterpoised for equalizing the momentum of the entry and exit pallets which are made of sapphires and excellently polished.The provenance is as impressive as the watch itself. Colonel Harvey served as a liaison between Breguet and some of the most eminent Britons of the day. The Duke of Wellington bought a Breguet watch through Harvey. Subsequently, the watch became part of the most famous Breguet collection ever assembled, that is the Salomons Collection. When part of that collection was sold, the watch was bought by Mr. Kalish, an important American collector. During the sale of his estate, it was bought by another American collector.