Before Patek Philippe presented the world’s first annual calendar back in 1996, the complete calendar was the watch of choice for many astute collectors in search of a dress watch with a good range of displays (without, of course, incurring the cost associated with a perpetual calendar). As annual calendars have become ubiquitous, perceptions seem to have shifted a bit. And some collectors have come to understand that, for the most part, designing the typical annual calendar movement, which tracks the months as they alternate between 30 and 31 days, but not 28 and 29, isn’t really all that complex. A well-designed complete calendar, a mainstay in watchmaking before the advent of the annual calendar, seems to be enjoying another moment in the sun.