If there is an archetypal Rolex visual, it is the meeting of steel and gold known as Rolesor. The term, first patented by the brand all the way back in 1933, can be used to describe a watch with any of the three colors of the precious metal—but it is the yellow gold version specifically that is so symbolic. Combine that two-tone palette with the sweeping lines of the Datejust, and you have a model that screams the name of the manufacture louder than any other.   It is a look which has been ever present in the lineup since the 1950s, seen sometimes as the height of fashion and at others as a retro throwback. The watch itself is among the least altered model of any in Rolex’s portfolio—on the outside at any rate. The ref. 162XX series kicked off in 1988 (taking over from the ref. 160XX range), with the yellow Rolesor ref. 16233 picking up where the ref. 16013 left off. As is usual with the Datejust family, it was a new caliber which prompted it. However, even the updates to the movement on this occasion were minimal and it was far more about gently evolving the components already present than it was about introducing anything too revolutionary.   Rolex, as always, were striving to make their engines as cutting-edge as possible, ensuring they stayed right at the forefront of what was achievable in terms of accuracy, reliability and resilience. Apart from that though, there was very little to choose between the outgoing series and the incoming, bar a couple of tweaks here and there. The watch was still the perfect everyday companion piece and a bridge between Rolex’s all-out dress models and their legendary Professional Collection.   Like its predecessor, the ref. 16233 also had its fair share of other colors. A particular favorite is a deep sunburst blue which contrasts beautifully with the yellow bezel and is a real attention grabber. Asking $5999