Rolex Seadweller Mk1 Matte Dial Reference 16660Its time for transition In the early 1980s Rolex began using more robust sapphire crystals on their watches. Known as transitional models, early example were fitted with matte dials a lot like the dials in the plastic glass watches that had preceded them. This transitional Seadweller is fitted with its original flawless Mk1 matte dial (many were replaced at service with glossy dials !) with a creamy patina on the hour plots that are a good match with