Rolex Datejust Reference 1603 Grey Sigma DialTHE GREY TWIST ON THE WRIST Once seen as the humble member of the Rolex family, the Datejust is enjoying a renaissance with collectors and dealers. This 1603 is a lovely example of a really clean watch, with a strong case and crisp fluted bezel. The grey dial importantly has all its lume dots intact, which match the hands and the white text remains sharp. The sigma white gold markers are in perfect condition this really is a very clean looking watch.