Rolex Submariner 6205 Small Crown "First Submariner"The 1950s proved to be a defining era for Rolex, highlighted by the introduction of some of its most legendary models: the Submariner, GMT Master, Day Date, and Explorer lines. As scuba diving gained traction among adventurers and professionals alike, Rolex recognized the growing demand for a dependable dive watch to help monitor time spent underwater and reduce the risk of decompression sickness, also known as the bends. There was also a need for a