Wrist Chronometer no. 5675

Case: Dial: Movement: Cal. 8.59 rectangular 21x10.8x2.8mm, 18 jewels, 8 adj, Geneva seal Provenance: 1929 circa - Niton, Geneve 1929 - Catalogue Manufacture des Montres Niton S.A. Geneve, Paris, New-York (1929?) Only picture of movement in Catalogue. This caliber was also used by Audemars Piguet