Séverine gives Roubaud a Nogent knife, which he is impressed with. The region of Nogent-Bassigny is a center of French cutlery manufacture. It also the name of a company that makes knives and similar items.
Lison is also the name of a station on the line Paris Saint-Lazare Cherbourg.
La Lison, the name of the locomotive, is also the name of a river (Le Lison) in eastern France, in the département of Le Doubs in the region of La Franche-Comté.
This film is part of the Criterion Collection, spine #324.