The F.P. Journe F.P.Journe OctaAutomatique Réserve de Marche 40mm Silver Dial Platinum Case (Ref. F.P. Journe Octa Reserve de Marche Ref. A), introduced in 2023, is a Platinum-cased luxury mechanical wristwatch. The case measures 40 mm. The dial is Grey. Powered by a Automatic movement. It wears on a Alligator skin strap/bracelet. On the secondary market, the F.P.Journe OctaAutomatique Réserve de Marche 40mm Silver Dial Platinum Case averages $189,113 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.