Rolex Chronometer Unicorn 15 Jewels RWC ltd guilloche dial and case pocket watch

Case: case after carefully polishing, with marks of using, case size 46 mm without crown inner cover signed Rolex Watch Co case nbr: Movement: circa 1930 Rolex Unicorn stem-winding movement, 15 jewels, good working, serviced, abt 30 hours power reserve Dial: metal guilloche dial in good condition with some marks of using, ivory color, Arabic hours marks, signed "Rolex Chronometer Unicorn" gilded hands, acrylic glass