A Special 150th Anniversary Openworked Perpetual Calendar. ... with an additional "150" logo and "1 of 150 pieces" engraving on the sapphire caseback frames. ...

Audemars Piguet launches a game-changing perpetual calendar movement that can be ... with an additional “150” logo and “1 of 150 pieces” engraving on the sapphire caseback frames. ...

The classic version of this type of perpetual calendar uses a sliding frame but we have also seen completely different versions based on moving gears. Video after the break.

The ultra-simplified Secular Perpetual Calendar features a rhodium-plated silver 39mm case that frames a stunning anodic oxidation-treated blue titanium dial.

At SIHH 2019, Vacheron Constantin pulls out all the stops, unveiling it Traditionnelle Twin Beat(R) Perpetual Calendar watch with two balances beating at different speeds in order to stretch four ...

View Abalone seven-piece desk set perpetual calendar frame, 1166, letter rack, 1156, pen tray, 1159, inkwell, 1148, rocker blotter, 1164 and blotter ends, pair, 1153 by Tiffany Studios on artnet.

hen Lionel Messi accepted FIFA’s Best Men’s Player award in 2022, the Argentine soccer star wore a platinum Patek Philippe Ref. 5270P Perpetual Calendar Chronograph that retails for $218,000.

The result is the Polo Perpetual Calendar Ultra-Thin with highly wearable proportions, thanks to a 42mm case measuring just 8.65mm thick.

That the perpetual calendar, invented in the mid-1700s, will make a timepiece relevant long after we’ve shuffled off this mortal coil is part of its magic.