Reference 5396R-012 celebrates the 20 year anniversary of Patek’s patented annual calendar complication created in 1996. The watch features a two-line annual calendar with moon phases and a 24 hour indicator. In celebration, 18k rose gold Breguet numerals, which are typically reserved for special productions, are applied to the dial. The watch has engraved and 18k rose gold filled minute pearls that surround the edges of the dial. Subtle details such as these are the reason why Patek Philippe is regarded as a premier manufacturer. Reference 5396 is housed in an 18k rose gold case and has a sapphire case back which brings the vintage-inspired watch into modernity.