Salaams Cathey,
I have to say what a superb sword this is. I'm not certain about the script except to say the design resembles decoration on some Ethiopian swords in that it has foliate scrolls etc... If it is of the same manufacture I would suspect German Solingen ... but only as a guess. Perhaps you already have a fair idea? As a wild guess something like 12th Dragoons, Napoleonic.
Regards,
Ibrahiim al Balooshi.