The Girard-Perregaux Girard PerregauxSport Classic Chronograph Colorado Grand 49580 - Inventory 7958 (Ref. 49580) is a Steel-cased luxury mechanical wristwatch. The case measures 40 mm. Powered by a Automatic movement. It wears on a Rubber strap/bracelet. On the secondary market, the Girard PerregauxSport Classic Chronograph Colorado Grand 49580 - Inventory 7958 averages $3,999 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.