Nautical motifs and allusions are a common inspiration in the watch world because of the connection between the modern timepiece and original marine chronometers, known for their precision. Patek Philippe, whose classic round watches are a brand tradition, is surprisingly among those with a model influenced by the nautical arts. The Nautilus, first launched in 1976, was inspired by the shape of a ship’s porthole. It is now a classic collection in the Patek Philippe family, and the sportiest timepiece the brand makes. The original was a 42mm stainless steel case, with black dial and a date window, Ref. 3700/1, with a distinctive integrated case and bracelet design.