Patek Philippe 5350R Annual Calendar Advanced Research 18K Rose Gold Gray Dial

The Patek Philippe 5350R-001 Annual Calendar Advanced Research is a compelling expression of horological innovation, introduced in 2007 as a limited edition of just 300 pieces. Housed in a 39 mm 18‑k rose gold case measuring approximately 11.2 mm in thickness, it features the advanced Caliber 324 S IRM QA LU, equipped with a Spiromax balance spring and silicon escape wheel—hallmarks of Patek’s Advanced Research program. The silvery‑gray dial presents a refined annual calendar layout with day, date, month, moonphase, and power‑reserve indicators, all driven by a Geneva‑Seal movement of 36 jewels. The exhibition caseback, engraved “Patek Philippe Advanced Research,” offers a window into the movement’s technical sophistication. Its restrained water resistance of around 25–30 meters underscores its dress‑watch character. As a limited‑edition model that bridges classical complications and cutting‑edge materials science, the 5350R‑001 stands as a highly collectible milestone in Patek Philippe’s modern era. Like New with Patek Philippe Advanced Research box, setting pin and papers dated 2007. Includes Patek Philippe Extract from the Archives dated 2007.