Taking a step back for a moment, the Patek 5396 Annual Calendar was introduced way back 2006 as the first annual annual calendar in a Calatrava-style case; remember, the link first Patek annual calendar was only introduced a decade earlier. Patek last updated the 5396 link lineup in 2016 on the link 20th anniversary of the complication. Now, the reference gets its most dressed-up treatment yet.