Patek Philippe & The 20th Anniversary of the Annual Calendar
Today we come back on a complication Patek Philippe introduced 20 years ago in its collection: the Annual Calendar. Since then, this complication has encountered a great success and has been fitted in a variety of Patek models.
So let's learn more about the development on this "simple" complication with Mr. Philip Barat, Director of Development at Patek Philippe.
