25. Patek Philippe. A fine stainless steel medium size quartz calendar bracelet watch with diamond set hour markers Patek Philippe. Belle montre bracelet de taille medium en acier avec date et sertie de diamants au cadran mouvement quartz Model: Nautilus Reference: 3900/001 Date: Purchased 14th December 1991 Movement: 7-jewel Cal.E23SC quartz, No.1554021 Dial: Sunburst blue/grey, applied diamond hour markers, date aperture at 3, polished baton hands with luminous inserts, centre seconds Case: Brushed and polished cushion form, sealed back, access to the movement through glass Strap/Bracelet: Fitted brushed and polished stainless steel link Buckle/Clasp: Signed stainless steel folding clasp Signed: Case, dial & movement Size: 33mm Accompaniments: Patek Philippe box, Certificate of Origin dated 14/12/1991, brochures