IWC
Portugieser Perpetual Calendar 44 IW503704
44.4mmCurrent Production
Retail: $57,800
IWC Schaffhausen’s perpetual calendar was originally developed during the 1980s by former head-watchmaker Kurt Klaus. In 2003, the legendary complication was presented in the Portugieser collection for the first time. Since then, the Portugieser Perpetual Calendar has been a major pillar of the collection.
Source: IWC website, last updated Mar 2026
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