Calatrava 565

Patek’s sporty, water-resistantWater resistanceA watch’s ability to resist water entering its case under specified conditions, often stated as a pressure or equivalent depth. Seals can deteriorate and the crown can be damaged, so an original rating does not establish a vintage watch’s present resistance. Calatrava: a bezelBezelThe frame surrounding the crystal at the front of a watch.-less monocoque case by Taubert with the crystal sitting flush, screw-down back and inner soft-iron case. One of the first Pateks made in series in steel, though most are yellow gold.