![IWC | DA VINCI, REF 3750 YELLOW GOLD PERPETUAL CALENDAR CHRONOGRAPH WRISTWATCH WITH MOON-PHASES CIRCA 1998 | Watches Weekly | Geneva | 2020 | Sotheby's IWC | DA VINCI, REF 3750 YELLOW GOLD PERPETUAL CALENDAR CHRONOGRAPH WRISTWATCH WITH MOON-PHASES CIRCA 1998 | Watches Weekly | Geneva | 2020 | Sotheby's](https://sothebys-md.brightspotcdn.com/59/38/18c4d6784fdeb8198b43d8c2f650/g00503-bjn7w-3.jpg)
IWC | DA VINCI, REF 3750 YELLOW GOLD PERPETUAL CALENDAR CHRONOGRAPH WRISTWATCH WITH MOON-PHASES CIRCA 1998 | Watches Weekly | Geneva | 2020 | Sotheby's
![IWC, YELLOW GOLD DA VINCI PERPETUAL CALENDAR CHRONOGRAPH WITH GOLD BRACELET, REF. 9252, CASE NO. 2'521'576 | Christie's IWC, YELLOW GOLD DA VINCI PERPETUAL CALENDAR CHRONOGRAPH WITH GOLD BRACELET, REF. 9252, CASE NO. 2'521'576 | Christie's](https://www.christies.com/img/LotImages/2020/GNV/2020_GNV_19729_0023_001(iwc_yellow_gold_da_vinci_perpetual_calendar_chronograph_with_gold_brac091626).jpg?mode=max)
IWC, YELLOW GOLD DA VINCI PERPETUAL CALENDAR CHRONOGRAPH WITH GOLD BRACELET, REF. 9252, CASE NO. 2'521'576 | Christie's
![IWC Schaffhausen Da Vinci Perpetual Astronomical Calendar 18k gold automatic watch 3750 Swiss Made — Time2Timepiece IWC Schaffhausen Da Vinci Perpetual Astronomical Calendar 18k gold automatic watch 3750 Swiss Made — Time2Timepiece](https://images.squarespace-cdn.com/content/v1/5a05a243b1ffb6a010d373cf/1579741979377-TJHYATWLBDUL0XZSXNZK/23-23January+20%2C+2020.jpg?format=2500w)
IWC Schaffhausen Da Vinci Perpetual Astronomical Calendar 18k gold automatic watch 3750 Swiss Made — Time2Timepiece
IWC DA VINCI. PERPETUAL CALENDAR CHRONOGRAPH. Circa 1985 18K yellow gold bracelet watch on leather. CASE: round with steps and attachments. Hemispheric pushers. Perpetual calendar setting by the crown. DIAL: white with
![IWC Schaffhausen Da Vinci Perpetual Astronomical Calendar 18k gold automatic watch 3750 Swiss Made — Time2Timepiece IWC Schaffhausen Da Vinci Perpetual Astronomical Calendar 18k gold automatic watch 3750 Swiss Made — Time2Timepiece](https://images.squarespace-cdn.com/content/v1/5a05a243b1ffb6a010d373cf/1579741999821-8EASPP95WV2POGU6MC93/25-25January+20%2C+2020.jpg?format=2500w)
IWC Schaffhausen Da Vinci Perpetual Astronomical Calendar 18k gold automatic watch 3750 Swiss Made — Time2Timepiece
![IWC, YELLOW GOLD DA VINCI PERPETUAL CALENDAR CHRONOGRAPH WITH GOLD BRACELET, REF. 9252, CASE NO. 2'521'576 | Christie's IWC, YELLOW GOLD DA VINCI PERPETUAL CALENDAR CHRONOGRAPH WITH GOLD BRACELET, REF. 9252, CASE NO. 2'521'576 | Christie's](https://www.christies.com/img/LotImages/2020/GNV/2020_GNV_19729_0023_000(iwc_yellow_gold_da_vinci_perpetual_calendar_chronograph_with_gold_brac091623).jpg?mode=max&width=600)