Quote:
Originally Posted by 77T
A brief history of dials with Tritium...
Rolex Luminous Material Timeline
Before Early-1960s: Rolex uses radium for lume (radium dials are generally marked as “SWISS”).
1963: Rolex switches from radium to tritium for lume (tritium dials are generally marked as “SWISS – T < 25” or “T SWISS T”).
1993: Nemoto & Co invents Luminova (patented in 1995).
1998: Rolex begins using Luminova on its watch dials (Luminova dials are generally marked as “SWISS”).
2000: Rolex begins using Super-Luminova, which is similar to Luminova but sold through a different supplier (Super-Luminova dials are generally marked as “SWISS MADE”).
2008: Rolex debuts its proprietary Chromalight display on the Sea-Dweller, which glows blue.
Credit Paul Altier
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Indeed useful stuff 77T. I apologize that my post was perhaps a little misleading.
