JUMPING 24-HOUR WATCH, CIRCA 1890 Case: n. 64277, four-body in blued gun metal. Dial: white enamel, jumping hour with Roman numerals for 12 hours and Arabic numerals for 24 hours, minute track, small seconds, pear hands. Movement: key-less winding, n. 64277, patent 7197 (by Couleru-Meuri), lever escapement, bimetallic balance with screws, flat hairspring. Accessories: – Diameter Ø: 55 mm Note: working, but to be serviced.