Case material: Steel; Charge: Automatic; Conditions: New Year : 1980; Presentation condition : With dealer guarantee ; Price on request Gmtbroker Reference: nessuna Nautilus 3700/1 original certificate ! - Full steel, black ribbed dial with white gold and tritium indexes, Patek Philippe 28-255 C caliber, date, automatic movement. Original Patek Philippe papers. A beautiful exemplar of the inconic Nautilus first generation.