Gents Patek Philippe Calatrava in 18k white gold with 18k white gold tang buckle. Manual w/ subseconds. With wallet, booklets & papers. Ref 3919G. Circa 2002. Fine Pre-owned Patek Philippe Watch. Certified preowned Dress Patek Philippe Calatrava 3919G watch is made out of white gold on a Black Gold Strap band with a 18k White Gold 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.