Girard-Perregaux 1957 Gyromatic Watch - on aBlogtoWatch.com "Let's all wish Girard-Perregaux a happy 225th birthday and share a virtual cake, right along with a closer look at this beautiful tribute to the brand's Gyromatic watches from the 1960s. The Girard-Perregaux 1957 Gyromatic watch pays stylistic tribute to early models that used a technical solution by Girard-Perregaux to improve automatic winding efficiency from around the time when 'self-winding' was the hot thing in watches..."