"Rare Feather Cut Knife Pied De Roy-middle XIX Nogent"
Interesting and quite rare pied de Roy feather-cut knife. Manufactured in Nogent from the mid-19th century. This one is in very good condition, although note the missing tip of one of the blades. I think the body of this feather sharpener is nickel silver. 
Le Magazine de PROANTIC
TRÉSORS Magazine
Rivista Artiquariato