Following a special order for a reference 5159 with an engraved case (Sale 3390, Lot 16, sold by Christie’s in Shanghai on 26 September 2013, for RMB¥1,300,000), Patek Philippe was impressed by the aesthetic impact of this customized piece, that they decided to release reference 5160 in 2010 in an extremely small production number. So far it is produced in three gold colors, it is speculated that no more than three dozen pieces will be made for each color.

The piece is a remarkable combination of heritage techniques and modern horology. The movement is among the best center seconds perpetual calendar automatic movements currently in production. Aesthetically, the officer-style case with screw strap bars and hinged cuvette is more than a light nod to historical watches of the early 20th century, and so is the overall dial design with radial Roman numerals and the fifth of a second and Arabic 5 minutes outer divisions. The engraved case with its arabesque motif typical of the Belle Epoque is reminiscent of the artful decorations of vintage pocket watches.