Rolex Explorer 14270 Tritium DialThe last of the vintage style Explorers The Rolex Explorer has been a constant force in the Rolex sports watch line up 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, as the last of the vintage style Explorers with tritium dials, drilled lugs and numbered endlinks. This example has clean looking tritium lume in the hour markers and the hands.