The Patek Philippe ref. 5235G has always been an unusual model from the firm’s lineup. First introduced at Baselworld in 2012 and no longer in production, the wristwatch features a regulator-style annual calendar cased in white gold with a brushed two-tone silvered dial and blue accents. Drawing its inspiration from old regulator clocks from the eighteenth century, the design is elegantly executed with subtle details that demand close attention to fully appreciate the charm of this timepiece.

The contrasted white and grey vertical brushing of the dial changes pleasantly under various lighting conditions. In addition to the symmetrical layout of the dial, the lugs are reminiscent of vintage Patek Philippe Perpetual Calendar references 3448 and 3450, giving the timepiece an overall clean and retro aesthetic.

Fitted with the self-winding cal. 31-260 REG QA designed specifically for this model, it is the first serially produced Patek Philippe caliber to incorporate three silicon components developed by the firm’s Advance Research department: a silicon escape wheel, a silicon anchor and a silicon balance spring.

Exceedingly stylish and unique, the present example 5235G from circa 2015 is offered in its original double factory sealed condition and further accompanied by its full set of accessories. Fresh-to-the-market, this timepiece is the 46th white gold example to be identified, allowing collectors another chance at acquiring this highly coveted, discontinued, regulator-style annual calendar.