IWC calibre 61 18k pink gold wristwatch, manual winding, Switzerland around 1942, snap on case back, fancy lugs, duoton-dial restored, display of hours, minutes & sweep seconds, nickel plated movement with fausses cotes decoration, Breguet-hairspring, glucydur-balance, diameter approx. 34 mm, overhaul recommended at buyer's expense, condition 3, only 7800 pieces of calibre 61 have been produced between 1938 and 1942, property of a collector