Rolex 6240 / 6263 / 6265 with tropical/brown subdials

The Rolex Reference 6240 is notable as an early Daytona model, distinguished by its Oyster case and screw-down pushers, a significant departure from earlier non-Oyster chronograph references. This reference is often considered a transitional model, bridging the gap between the manually wound Daytona chronographs with pump pushers and the later, more robust screw-down pusher variants. Its introduction marked a step towards enhanced water resistance and durability for the Cosmograph line. This reference features a stainless steel case, typically housing a manually wound Valjoux-based movement. The case diameter is commonly observed around 37mm. The crystal is made of plexiglass, consistent with Rolex sports models of its era. The screw-down pushers, a key characteristic, contribute to its improved resistance against dust and moisture compared to its predecessors. For collectors, the Reference 6240 holds particular interest due to its relatively short production run and the presence of screw-down pushers on a manually wound Daytona. It represents an important evolutionary stage in the Cosmograph lineage, appealing to those who appreciate the development of the model's technical specifications. Variants may include different dial types, such as the 'Paul Newman' exotic dials, which significantly impact collector value.