The Girard-Perregaux Girard Perregaux1957 Heritage Gyromatic 225th Anniversary (Ref. 41957-11-131-BB6A), introduced in 2016, is a Steel-cased luxury mechanical wristwatch. The case measures 40 mm. The dial is Champagne. Powered by a Automatic movement. On the secondary market, the Girard Perregaux1957 Heritage Gyromatic 225th Anniversary averages $6,200 across 1 active listing. When buying pre-owned, check condition grade, box and papers (typically a 10–20% premium), service history, and originality of dial and hands. Use the listings and price history on this page to benchmark fair market value.