The Annual Calendar is a complication invented by Patek Philippe.

While it plays second string to the perpetual calendar in the minds of most collectors, the reality is that the construction of the annual calendar mechanism is equally challenging, and in some cases, requires even more components. The Reference 5035 was Patek's first Annual Calendar model launched in 1996, and set the bar for all that followed — including those from competitors.

The particular annual calendar we have here is a Reference 5396G from circa 2019. Housed in a 38.5mm white gold case with a sapphire crystal, a white gold signed crown, and a polished bezel, it features a non-luminous, silver opaline dial with applied, white gold baton indices, a matching dauphine handset, date, day of the week, and month indicators, and a moonphase indicator. Oh, and did we mention that this one happens to be double-signed by Tiffany & Co., America’s most famed and historic jewelry retailer? 

Powered by the automatic Patek Philippe Caliber 324 S QA LU 24H/303 movement, it comes paired to a black alligator strap with a signed, white gold deployant clasp and a signed buckle. In good condition, it also includes all its factory goodies — as well as those from Tiffany.

Important watches such as these don’t surface all that often. 

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