1967 Patek Philippe Calatrava 18k Yellow Gold Double Signed Gübelin Silvered Dial 3445This is an exceptionally well preserved and very rare 18k yellow gold Circa 1967 Patek Philippe reference 3445, mid size 35mm and featuring a fantastic silvered dial double signed by the famous retailer "Gbelin". The watch is in excellent condition, showing only light signs of wear or minor scratches, which are to be expected for a piece of its age. The Patek Philippe reference 3445, introduced in the early 1960s, holds the distinction of being the