Gents Patek Philippe Calatrava in 18k yellow gold Ref# 3919J-001. On original Patek Philippe reptile strap with 18k yellow gold classic Patek Philippe tang buckle. Hobnail texturized bezel with sapphire crystal, case diameter, 33 mm. Manual wind movement with sub-seconds at 6 o’clock. White porcelain dial with applied black Roman numerals. Box and Extract of the Archives (to follow). Excellent condition.