Patek Philippe Aquanaut Reference 5065 Jumbo in SteelThe Mean Green Patek Jumbo Aquanaut When it was introduced in the late 1990s, the 38mm jumbo reference 5065 Aquanaut was Pateks watch aimed at the watersports market; supported by the fact it was offered on a rubber strap and given the name Aqua. We really love the rawness of the first execution of the Aquanaut dial, with its 3D checkerboard finish and the presence of the 3 marker that was removed in later flatter dial versions. The steel case remains