PATEK PHILIPPE. NAUTILUS. REF. 3900/001. SOLD ON 26 MAY 1988. Bracelet watch in 18k (750 thousandths) yellow gold and stainless steel. CASE: steel cushion, screw-lock, yellow gold bezel and crown. Dial: blue-grey "sigma", applied gold hour-markers, central seconds and date window. MOVEMENT: quartz, cal. E23SC. STRAP: 18K (750 thousandths) yellow gold and steel, folding clasp, pastille decorated with the Calatrava Cross, signed Patek Philippe. Dial, case and movement signed. Numbered 1'552'951/ 2'854'494. (Operation not guaranteed). DIAM. 33 mm. WITH: certificate of origin: Aldebert purchase, 16, Place Vendôme, Paris. Appraised by Emeric Stephen PORTIER - +33 1 47 70 89 82 - [email protected] - assisted by Géraldine Richard, SFEP expert. Condition report by the expert: Micro scratches from use, loose strap, polished case and strap pastille. Service hands + crown. The quartz movement is working at the time of writing, but cannot be guaranteed. Neither can the individual components, as repairs/restorations have led to the replacement of certain original parts (see Patek Service).