Rolex is the largest single luxury watch brand by far, producing about 2000 watches per day. Rolex SA was founded in 1905 by Hans Wilsdorf and his brother-in-law, Alfred ... More»Davis. Contrary to popular belief, Hans Wilsdorf was neither Swiss, nor a watchmaker. Wilsdorf & Davis was the original name of what later became the Rolex Watch Company. They originally imported Hermann Aegler's Swiss movements to England and placed them in quality cases made by Dennison and others. These early wristwatches were then sold to jewelers, who then put their own names on the dial. The earliest watches from Wilsdorf and Davis were usually hallmarked "W&D" inside the case back.