Excellent condition Montblanc Star Nicholas Rieussec monopusher chronograph in 18 karat rose gold 43mm case, hand-wound movement with a standard time display, a rotating date disc and a chronograph with classical column wheel control featuring an innovative disc clutch, Standard time is shown on an off-centre calibrated ring with Arabic numerals. This frames a cutout in the dial in which the skeletonized date disc rotates. The current date is shown by a fixed red triangle at 12 o'clock…