Pocket watch: very well preserved pocket chronometer by Vacheron & Constantin, ca. 1905

Ca. Ø49mm, approx. 78g, 18k gold, engine turned, case number 187157, movement number 310304, dome marked "Demi-Chronometre", exquisite, signed Ankerchronometer movement, fine adjusting device, wolf's toothing, moustache lever, perfectly preserved original enamel dial, gold hands, in excellent condition, in working order. The description "Demi-Chronomètre" was used by Vacheron Constantin to indicate that the movement was sent to the observatory for chronometric control, but for commercial reasons did not stay long enough to complete the entire test procedure. To our knowledge, only two Geneva companies used the designation "Demi-Chronomètre": Vacheron Constantin and Henry Capt (source:https://www.cortrie.de/go/B3R).