Mk2 drsd with thincase and an amazingly beautiful Tropical-dial. This collectors Rolex has  clearly visible engraved numbers (serial 175xxxx/1968) between it´s lugs. The Mk2 dial has fadet into an outstandingly beautiful brown-tone over the years, with clear white tritiumplots appearing on it. The hands, also with original lume, are perfectly matching to the dial.