with a new movement, Caliber 324 S C replacing the Calibre 315 S C.
http://www.patekphilippe.com//html/en/descriptionCards//ref_5127R_001.html
Never could understand such a beautiful watch IMHO, being removed from the collection.
I'm still loving mine after nearly four years.
Dave.

One of my favourites too. In white gold.
Had to settle for a 5296 first, though....