The Greubel Forsey GMTGF05 Tourbillon Globe 24 Seconds White Gold (Ref. GF05), introduced in 2014, is a White gold-cased luxury mechanical wristwatch. The case measures 43.05 mm. Powered by a Manual winding movement. It wears on a Crocodile skin strap/bracelet. On the secondary market, the GMTGF05 Tourbillon Globe 24 Seconds White Gold averages $425,700 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.