Thank you Ahriman, Jim and Tim.
Because of the quality of this sword, wich is far better than my other west-african swords and knifes, I though it HAS to be an all-European sword, but the possibility of a reproduction is to be seriously considered, for all the reasons you have mentionned.
Don't worry Tim, even if it is a copy, I keep loving this sword

. More than beeing only concerned by edged weapons, the members of this forum and myself love the ethnographic background of each one, and this particular sword is a good example of a rich, though not entirely known, history. The part of mystery behind each sword is always fascinating