IWC very fine & rare 18k yellow gold & diamond set open face pocket watch reference 5211, Switzerland around 1980, 3-piece construction case on both sides glazed, bezel with 136 diamonds set additional approx. 1.71 ct & snap on case back, display of hours & minutes, gilded, full skeletonized & from Hand engraved calibre 9527, measures approx. 42 x 50 mm, unique character, description and fine wood box (without inlay) enclosed, condition 2, property of a collector