? Wrist Chronometer no. 5923

Case: Dial: Movement: E. Gubelin, 18 Jewels, 8 Adjustments, Lucerne, Swiss, with Geneva seal, movement serial number 5923, movement size; 7 mm x 19.8 mm. The movement is by Niton. Provenance: 19?? - Niton, Geneve eBay, 16-09-2019, eBay seller name; jadore19dior