36mm Rolex Datejust Non-Quick Set Reference 1601 Circa 1969 Serial Number 2,549,XXX Size 36mm Custom Turquoise Dial + Original Birth Dial Condition Excellent One Year Warranty Jubilee Bracelet Fluted Bezel In the 1970's Rolex produced a very limited DayDate with hand mixed colored enamels. These are known as "Stella Dials." There are four stories: My favorite is that these dials were named after Frank Stella the prominent artist who worked with brightly hued enamels throughout the '70's. Another is that the dial manufacturer was named "Stella". the third is that "Stella" is a type of varnish and finally in Latin "Stella" means Star or Star Like. Choose your favorite. Manufactured primarily for the Middle Eastern Market, these brightly hued dials were not popular and Rolex end up destroying most of these dials, making them extremely rare highly collectible. Green, is the identifying of Rolex and represents success and prosperity.