Lot Essay
Patek Philippe introduced the Aquanaut model to the market in 1997, inspired by the success of the design of the Nautilus model. The shape of the Aquanaut case features the same port-hole design, but was also water resistant to 120m. In 2007, the reference 5167 series was launched, featuring a more subtle textured dial and a larger case, measuring 40mm diagonally across the case.