Patek Philippe Annual Calendar Reverso This particular model features a

This particular model features a beautiful glossy black dial housed in a thick and sharp 39mm stainless steel case with barrel pushers

There's definitely signs that it was used to do what it was meant to do

this is a well-built

dates to circa 1963 and features a not all that often seen — matte black Tritium dial with applied indices

Patek Philippe Annual Calendar Reverso This particular model features aIn 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