Collection
Discover Peter.JH's impressive Patek Philippe collection, featuring four perpetual calendars: 3940J, 5940J, 5040J, and 5140J.
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Reference Guide
Explore the Patek Philippe Ref. 3940 and 5140 perpetual calendars. A visual guide comparing design evolutions, dial variations, and collector insights.
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I love this watch.
Even though it’s only 1mm larger than 3940 I think it has a much bigger presence on the wrist.