Rolex Explorer 14270 Rare ‘Black Out’ DialNo lume numbers on this Explorer The Rolex Explorer has been a staple of the Rolex sports watch collection since the 1950s. In the early 1990s Rolex introduced the sapphire glass 14270 Explorer with applied 3 6 9 numerals, where before they had always been painted. There were some early very rare examples that had black enamel filled numerals instead of regular luminous material. The experiment was short lived and the watches were changed to have lume