Patek Philippe Calatrava Rose Gold Silver Dial Breguet Numerals Ref 3820 with Box and Original Certificate of OriginThe first Patek Philippe Calatrava was introduced in 1932 as reference 96, and since then, it has remained one of the brands most iconic and timeless models. The manufacture had just been acquired by Charles and Henri Stern, and this was the first model they introducedintended to breathe new life into the Genevan brand. With minimal changes over the decades, it has always stayed true to Pateks core values of elegance and refinement. This understated