Aaron your razor was made by Lamoureux Frères, in Nogent France. Camille Pagé in is book on cutlery mentions this firm in 1871.
In 1876 an Horticulture journal subscription would give you as a prime a 3 bladed gardening knife made by Lamoureux Frères.

Thats all i could find on this firm, least you have an idea in dating.