Image courtesy of Patek Philippe, official website · shown: Calatrava family photo
Calatrava Officer
The "officer's case" branch of the Calatrava: a hinged caseback with a glazed inner cover, drawn from military officers’ pocket-watch cases. The 5153G-001 in white gold, introduced in 2009, runs the cal. 324 S C automatic movement; the case swings open on its hinge rather than requiring a caseback tool.