Patek Philippe Annual Calendar Moonphase preowned The ubiquity of these watches

The ubiquity of these watches at the ~$200 price point was taken for granted until

and twin day and date registers at 3:00 and 9:00 respectively

This particular example dates to circa 1971 and features a stainless steel construction with a magnified acrylic crystal

These themes continue to the caseback of the timepiece

The annual calendar is a complication invented by Patek Philippe

Patek Philippe Annual Calendar Moonphase preowned The ubiquity of these watchesIn 1991, the soon to be graduates at the Geneva School of Engineering were presented with their final project prior to receiving their diploma simplify the perpetual calendar. Although the task was easier said than done, their work led to the inception of the annual calendar complication, patented by Patek in collaboration with the bright engineering minds at the GSE. Five years later, Patek debuted the Reference 5035 which marked the worlds first