Patek Philippe Calatrava in 18k Yellow Gold Ref. 3520 Porcelain Dial with Original Certificate of Origin "Clous de Paris" 1974 This Dual Time is accompanied

This Dual Time is accompanied by an Audemars Piguet archive extract confirming that the watch was sold in 1992

The dial has beautiful applied Arabic numerals at 12

original papers

This is a very bold and beautiful early 1970s alarm watch by Tissot

- Paper from the Decommission Auction

Patek Philippe Calatrava in 18k Yellow Gold Ref. 3520 Porcelain Dial with Original Certificate of Origin "Clous de Paris" 1974 This Dual Time is accompaniedIn 1932, Patek Philippe introduced the Calatrava, inspired by the iconic Bauhaus style. Since then, it has become the cornerstone of their collection and proudly stands as their flagship model. This 18k yellow gold version pays tribute to Patek Philippes original design, featuring a Clous de Paris (or "hobnail") bezel that adds a refined and distinguished touch. The case is in excellent condition, showcasing a lovely oxidized color and a beautifully