There’s A meticulous volume of artistry in A. Lange & Söhne timepieces. The Lang floral pattern is hand-engraved on Every single watch’s stability clock. This will make each piece distinctive from one another. Although the ref. 5164A is not readily available, Patek's decision to carry on the very long-functioning reference https://www.watchesworld.com/germanys-top-10-favourite-luxury-watches/