Only three are known, and two go under the hammer in Hong Kong head to head.
Once the world's most complicated timepiece goes unsold in Geneva.
"The Art of Watches, Grand Exhibition New York 2017" is a comprehensive walk through the watchmaker's history.
A diverse line-up with a Patek Philippe wristwatch for every budget.
Up close with Patek Philippe's high-tech wristwatch, an industry first with a compliant mechanism.
Stellar timepieces from Geneva's finest, including a million-dollar, double-signed 2499.
Perhaps the most interesting Calatrava Patek Philippe makes, one that's military yet Bauhaus.
A modern watch in well tailored period dress.
Cosmetic tweaks to the chronograph with annual calendar in stainless steel.
The yellow gold example of the Calibre 89 will go under the hammer at Sotheby's Geneva auction in May 2017.