Patek Philippe cal 315 SC

Patek Philippe cal 315 SC
In-house caliber
Automatic winding, 21,600 vph, power reserve 48 hours
Functions: hour, minutes, second, date
Diameter: 28.00mm
Thickness: 3.22mm
Balance spring: Flat hairspring with Gyromax regulating weights
Remark: Seal of Geneva, hand beveled edges, 21k solid gold rotor