The Girard-Perregaux Girard PerregauxGyromatic Swiss 17 Jewel Automatic Movement Mens Watch....34mm (Ref. Gyromatic), introduced in 1965, is a Gold-plated-cased luxury mechanical wristwatch. The case measures 34 mm. The dial is Silver. Powered by a Automatic movement. It wears on a Leather strap/bracelet. On the secondary market, the Girard PerregauxGyromatic Swiss 17 Jewel Automatic Movement Mens Watch....34mm averages $995 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.