JB200

Left-hand (“destro”) crown at 9 o'clock is the defining trait

Both the vintage and modern JB200 use an elongated tonneau case with prominent crown guards and the crown on the LEFT side at 9 o'clock. This destro layout is the single strongest identifying feature of the model; a right-crown case is not a JB200.

Dial signature and frogman/octopus motif

Modern dials read “Jacques Bianchi Marseille” (name at 6 o'clock on the Re-Edition). Vintage and re-edition divers carry the frogman/scuba-diver silhouette; the Poulpro sub-line replaces it with an octopus. Note a documented vintage look-alike diver retailed in Paris signed “Jacques Ryter” — same design DNA, different name; a genuine vintage Bianchi carries the Bianchi signature.

Base re-edition uses the Seiko NH35

The standard JB200 Re-Edition and the Méduse run the Seiko NH35 automatic (24j, 21,600 vph, ~41h). The Poulpro / Night Diver sub-line uses the Swiss Soprod P024. A movement other than NH35/Soprod for its reference is a red flag.

Military association is an unverified brand claim

The “~60 pieces issued to the French Navy / Marine Nationale” story is brand narrative repeated by editorial outlets; no contract, issue record or issue marking is documented. Do NOT treat Marine Nationale issue as an established fact, and never assign military provenance to a specific watch without independent archival evidence.