Patek Philippe Annual Calendar Reverso There's definitely signs that it

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

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

it's a spectacularly beautiful yellow gold dress watch on a matching multi-link bracelet complete with its correct period box

and a manufacture Calibre 631 'mechaquartz' movement

Paired to a black leather one-piece strap with contrasting top stitching and a stainless steel pin buckle

Patek Philippe Annual Calendar Reverso There's definitely signs that itIn 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