The F.P. Journe F.P.Journe SouveraineTourbillon Souverain Unworn Full Set (Ref. Tourbillon Souverain), introduced in 2010, is a Platinum-cased luxury mechanical wristwatch. The case measures 40 mm. The dial is Grey. Powered by a Manual winding movement. It wears on a Crocodile skin strap/bracelet. On the secondary market, the F.P.Journe SouveraineTourbillon Souverain Unworn Full Set averages $10,000,000,000 across 2 active listings. 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.