Also Existing over the dial and palms is Rolex’s Chromalight lume. This more recent in-property materials was to start with released in 2008 as Rolex’s proprietary luminescent compound and since its introduction, it's totally replaced Super-LumiNova inside the manufacturer’s lineup. Along with the very corrosion-resistant 904L stainless-steel (labeled as “Oystersteel” https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/