PATEK PHILIPPE. A FINE 18K GOLD WRISTWATCH WITH ORIGINAL CERTIFICATE AND BOX Signed Patek Philippe Genève, Calatrava Hobnail model, ref. 3919, movement no. 1’827’223, case no. 2’908’373, manufactured in 1991 Movement: cal. 215PS stamped with the Geneva seal, manual, 18 jewels, signed Dial: signed Case: snap on back, 33.5 mm. diam., signed With: Patek Philippe Certificate of Origin dated 1st November 1991 and presentation box. Extract from the Archives confirming the production of the present watch whit white porcelain dial and black Roman numerals in 1991 and its subsequent sale on November 1st 1991.