Patek Philippe Calatrava Ref. 5227
This Calatrava boasts a case with a “dust cover”, a piece of gold metal integrated into the case to cover the sapphire crystal caseback. True to Patek Philippe’s fastidiousness to detail, the hinge is virtually invisible thus keeping the case perfectly round and smooth. By all means, keep it a discreet affair but should the subject come up, open this cover to show off the beautifully finished and decorated automatic caliber 324 SC with a solid 21k gold winding rotor, a large four-arm Gyromax balance and a Spiromax balance spring that beats at the Patek Philippe Seal-mandated 28,800 oscillations per hour.