![Reference IW503404 Portuguese | A pink gold automatic perpetual calendar wristwatch with moon phases and 7 day power reserve indication, Circa 2015 | Fine Watches | 2023 | Sotheby's Reference IW503404 Portuguese | A pink gold automatic perpetual calendar wristwatch with moon phases and 7 day power reserve indication, Circa 2015 | Fine Watches | 2023 | Sotheby's](https://sothebys-md.brightspotcdn.com/dims4/default/f537900/2147483647/strip/true/crop/2000x2000+0+0/resize/385x385!/quality/90/?url=http%3A%2F%2Fsothebys-brightspot.s3.amazonaws.com%2Fmedia-desk%2Fwebnative%2Fimages%2Fbf%2Fbd%2F2841179c465cafebf80f096e8b67%2Fn11274-cvn96-t2-01.jpg)
Reference IW503404 Portuguese | A pink gold automatic perpetual calendar wristwatch with moon phases and 7 day power reserve indication, Circa 2015 | Fine Watches | 2023 | Sotheby's
![Buy this new IWC Portugieser Perpetual Calendar Perpetual Double Moonphase iw503404 mens watch for the discount price of £35,100.00. UK Retailer. Buy this new IWC Portugieser Perpetual Calendar Perpetual Double Moonphase iw503404 mens watch for the discount price of £35,100.00. UK Retailer.](https://www.thewatchsource.co.uk/images/watches/iw503404-IWC.jpg)
Buy this new IWC Portugieser Perpetual Calendar Perpetual Double Moonphase iw503404 mens watch for the discount price of £35,100.00. UK Retailer.
![Reference IW503404 Portuguese | A pink gold automatic perpetual calendar wristwatch with moon phases and 7 day power reserve indication, Circa 2015 | Fine Watches | 2023 | Sotheby's Reference IW503404 Portuguese | A pink gold automatic perpetual calendar wristwatch with moon phases and 7 day power reserve indication, Circa 2015 | Fine Watches | 2023 | Sotheby's](https://sothebys-md.brightspotcdn.com/dims4/default/ff7ca4d/2147483647/strip/true/crop/2000x2000+0+0/resize/385x385!/quality/90/?url=http%3A%2F%2Fsothebys-brightspot.s3.amazonaws.com%2Fmedia-desk%2Fwebnative%2Fimages%2Fb6%2Ff7%2Fe36115b541e2b8a0f7cb34f18f98%2Fn11274-cvn96-t2-03.jpg)
Reference IW503404 Portuguese | A pink gold automatic perpetual calendar wristwatch with moon phases and 7 day power reserve indication, Circa 2015 | Fine Watches | 2023 | Sotheby's
![IWC Watches on X: "Rise with the sun, live by the moon. Our star-studded Portugieser Perpetual Calendar (Ref. IW503404) diverges by just 1 day in 577.5 years from the actual phase of IWC Watches on X: "Rise with the sun, live by the moon. Our star-studded Portugieser Perpetual Calendar (Ref. IW503404) diverges by just 1 day in 577.5 years from the actual phase of](https://pbs.twimg.com/media/EAnRgJLXUAEgd0_.jpg:large)