IWC rare 18k yellow gold gents wristwatch with complete calendar & intermediate wheel chronograph, manual winding, Switzerland around 1982, reference 3710, made in a limited special edition of 150 pieces, including original leather strap with original 18k yellow gold buckle, screwed down case back, enamel colored dial, display of hours, minutes, small second, day, date, month, moon phase & chronograph, correction at the sides in case inserted, gold-plated movement, calibre IWC 795 (Valjoux 88), 17 jewels, fausses cotes decoration, diameter approx. 36 mm, condition 2