Patek Philippe Calatrava in 18k on leather strap. Auto w/ sweep seconds and date. With Archive papers. Ref 3802. Circa 2001. Fine Pre-owned Patek Philippe Watch. Certified preowned Dress Patek Philippe Calatrava 3802 watch is made out of yellow gold on a Black Leather Strap band with a Gold Plate tang buckle. This Patek Philippe watch has a 33 x 33 mm case with a Round caseback and White Roman Numeral dial. It is Gray and Sons Certified Authentic and comes backed by our 12-month warranty. Each watch is inspected by our certified in-house Swiss-trained watchmakers before shipment including final servicing, cleaning, and polishing.