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Girard Perregaux 1966 Annual Calendar & Equation Of Time


Girard Perregaux‘s newest watch in its 1966 collection is the the Annual Calendar and Equation of Time Watch. The watch only requires correction every February 28 because it automatically calculates the amount of days in each month. The case is in eighteen karat rose gold with double sapphire crystal displays. The equation of time indicates the difference between the real solar time and the mean or civil time.