Patek Philippe 5811/1G Nautilus Self-Winding Unworn comes with original box and papers WATCH Self-winding mechanical movement. Caliber 26‑330 S C. Date in an aperture. Sweep seconds. DIAL Sunburst blue with black-gradient rim, horizontally embossed, gold applied hour markers with luminescent coating. CASE White gold. Screw-down crown. Sapphire crystal case back. Water-resistant to 120 m. Diameter (10–4 o’clock): 41 mm. Height: 8.2 mm. STRAP White gold. Patented fold-over clasp with lockable adjustment system.