Sorry Manuel,
You will have to post clearer and more informative pics. Looks to be a cypher on the hilt but you don't show it. What does the rest of the blade look like? Are there any other markings or inscriptions which might give a clue as to origins?
In reply to your first question----what you show is a proof stamp on a sword. Other than that I can not tell anything further from what you have supplied.
Regards Stuart
