Oh Peter, you come along and wreck the whole party. I've seen several Belgian longarms in the Congo. But I can tell you they've moved on from the muzzle-loaders.

Um, a 1st stab at the name is E./F. Screreas?

Don't know of any mechanic with that name so how about Francois Schepers as both mechanics have 8 letters:

http://www.littlegun.be/arme%20belge/artisans%20identifies%20s/a%20schepers%20gb.htm





Kind Regards,

Raimey
rse