At 36mm in diameter, the Wenger-made case is regularly described as "oversized for the period" by dealers, collectors, and auction houses alike but, hey, it's true. We are still in the
link era of manually-wound Calatravas so the 2525 is powered by both the Patek caliber 10-200 and, towards the end of the run, the caliber 12-400. While this Calatrava was not marketed as a "sport" option quite like the 2533, it
link does feature
link a screw-down caseback.