IWC watchmaker Thomas Zimmermann at the bench, assembling the Portugieser Perpetual Calendar. @iwcwatches
IWC watchmaker Thomas Zimmermann at the bench, assembling the Portugieser Perpetual Calendar.  @iwcwatches
Uploaded April 2026 | Updated September 2026, 2 weeks ago
Throwback to 2024.

IWC watchmaker Thomas Zimmermann at the bench, assembling the Portugieser Perpetual Calendar IW503703.

A movement of 385 parts, driven by the IWC-manufactured 52616 calibre and its 7-day power reserve.
A quiet demonstration of mechanical expertise.

Ref. IW503703

#IWCschaffhausen | #IWCwatches | #Watches | #LuxuryWatches | #IWC | #Watchmaking | #WatchAssembly | #Asmr
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IWC watchmaker Thomas Zimmermann at the bench, assembling the Portugieser Perpetual Calendar.

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