Patek Philippe. A stainless steel automatic calendar bracelet watch with diamond set dial

Nautilus, Ref: 3800/1, Circa 1980
Patek Philippe. A stainless steel automatic calendar bracelet watch with diamond set dial
Model: Nautilus
Reference: 3800/1
Date: Circa 1980
Movement: 29-jewel Cal.330 SC automatic, adjusted to heat, cold, isochronism and 5 positions, gold rotor, Gyromax balance, No.1933299
Dial: Ridged sunburst blue, diamond set hour markers, date aperture at 3, polished baton hands with luminous inserts, centre seconds
Case: Brushed and polished 3-part, No.2971158
Strap/Bracelet: Brushed and polished link
Buckle/Clasp: Signed folding clasp
Signed: Case, dial & movement
Size: 38mm