Patek Philippe, Nautilus Jumbo, Ref. 3700/1, no. 538xxx/1308xxx, made in 1979 and sold on August 18, 1980. An iconic and rare cushion-shaped diver's watch in steel, black "sigma" dial with superb blue highlights, applied hands and hour-markers in patinated white tritium gold, date at 3 o'clock. Self-winding mechanical movement caliber 28-255 C., steel bracelet with original folding clasp. Delivered with its extract from the archives. The watch is in very good condition, both mechanically and aesthetically, with a virtually flawless dial and uniform patina of luminous material. Only the Calatrava cross on the folding clasp, still visible, shows signs of wear. The fruit of a timeless collaboration between Patek Philippe and the much-loved watch designer Gerald Genta, the Nautilus's unique appearance echoes the massive proportions of maritime portholes and bears the name of Captain Nemo's submarine in Jules Verne's "Twenty Thousand Leagues Under the Sea". Launched in 1976 as the brand's first water-resistant sports watch, the 3700 acier embodies every aspect of Patek Philippe's 1970s avant-gardism, and today remains probably the most coveted reference among enthusiasts. Advertising at the time said: "Like the great swords of another age, the Nautilus has taken shape in the skilful hands of master craftsmen". Diameter 42 mm A very fine iconic stainless steel cushion shape diver's wristwatch, black with lovely blue reflections dial, white gold patinated tritium luminous hands & applied indexes, date at 3. Automatic winding movement caliber 28-255 C. Original stainless steel band with deployant buckle. Extract from the archives. The watch is in very good general condition, both mechanical and aesthetic, the dial almost flawless and the patina of the luminous material uniform. Only the Calatrava cross of the folding clasp, still visible, shows signs of wear. Result of a timeless collaboration between Patek Philippe and the much loved designer of the watch's world, Gerald Genta, the unique appearance of the Nautilus echoes the massive proportions of maritime portholes and bears the name of Captain Nemo's submarine in Jules Verne's "Twenty Thousand Leagues Under the Sea". Launched in 1976 as the brand's first water-resistant sports watch, the reference 3700/1 embodies all aspects of Patek Philippe's avant-garde style of the 1970's and remains today probably the most coveted reference among amateurs. The advertising said, at the time: "Like the great swords of another age, Nautilus took shape between the skilled hands of master craftsmen".