The Rolex Datejust collection has been a fixture of Rolex’s portfolio since 1945. When it debuted, it was the first mechanical wristwatch to sport an automatically changing date display, a feature that has changed how the luxury watch industry uses the calendar mechanism. The series has countless editions on the secondary market, including the contemporary 41mm ref. 126300 for sale here. Features include 904L-grade Oystersteel, scratch-resistant sapphire, automatic winding technology, and long-lasting Chromalight.