Pocket watch of the renowned brand Vacheron & Constantin, produced around 1906.Old and rare Vacheron.It is a piece that measures 4.7 cm in diameter. The name Demi-Chronometre was used by Vacheron Constantin to indicate that the machine had been sent to the Geneva Observatory for chronometric control. place between 1872 and 1968. Only two brands used the Demi-Chronometre designation for their best watches, namely Vacheron and Henry Capt. In the description of the movement we will enumerate some of its excellent characteristics. The solid 18k gold case, including the inner cover, is in very good condition. Both are numbered and signed. On the inside cover are described some of the machine's technical details. Echapement a Ancre, Balancier Compensé, Spiral Coudé. Machine of very high quality, patented, inscription (Depose 1884) on the register bridge. Numbered and signed Vacheron & Constantin on the platinum under the dial. blue steel balance and a fantastic Brandt's Micrometric Regulator, visible on the balance bridge.Extraordinary watchmaking work.It is working very well, totally clean and serviced by our watchmaker, one year warranty. Original dial, signed Vacheron & Constantin, in very good condition, showing a hairline between 7 and 8 o'clock and ringing at 6 o'clock (not visible when closed). Original glass with small damage to the rim. Rare collector's item, unusual model from Vacheron & Constantin. Any questions do not hesitate to contact ››