The H&D Folsom agent in Belgium, at least through 1914, was Louis Muller of Liege. Muller may have actually been in the employ of Folsom as he registered the Crescent trade marks in Belgium. He was also a gun maker and registered twelve trademarks 1889 to 1894 including:
Acme, Club, Climax, Star, Rival, Standard, Meteor, and I.X.L.
http://www.littlegun.be/arme%20belge...uller%20gb.htm
Probably a different gun than the Folsom/Crescent American Gun Co. "Midget Field Model"
From Researcher's 1922 catalog