While the Daytona and Submariner may get more appreciation both at authorised dealers and vintage auctions, the Rolex Datejust has indisputably formed the backbone of the brand's collection since its introduction in 1945. The largest update to the Datejust line was the introduction of the Datejust II in 2009, which saw the classic 36mm watch upsized to a much larger 41mm case. Every aspect of the watch was scaled up, from the bezel to the lugs. This led to a watch that was larger, but still felt proportionally true to the original design. The result is still a watch that fits into the same niche as the original - something that can be worn in anywhere, any time.