The F.P. Journe F.P.Journe OctaLune Automatic Grey Dial 42mm Rose Gold Grey Dial Octa Lune (Ref. F.P. Journe Octa Lune Ref. LN), introduced in 2018, is a Rose gold-cased luxury mechanical wristwatch. The case measures 42 mm. The dial is Grey. Powered by a Automatic movement. It wears on a Rose gold strap/bracelet. On the secondary market 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.