Brand: Zelus. Model: Chronographe Suisse. Calibre: Landeron 48. Jewels: 17. Weight: approx. 42 g. Case size: 39 cm excluding crown. Dual casing, copper inside, 18 kt gold outside. Distance between lugs: 35 mm. Strap: leather, 21 cm including watch, vintage Patek Philippe and rose gold-coloured deployment clasp. Two additional straps that fit the watch perfectly. Inspected and in excellent working order. Unfortunately, some reflections of the light make the case look scratched and the hour markers look black, but they are silver. However, I assure you that the case and the dial are in almost perfect condition for the age of the watch. Insured and guaranteed shipping with tracking.