Hi Fernando!!! That is a very interesting piece. To me, the miquelet percussion lock does not look converted from flint. The cut outs on the breech of the barrel as well as the bolster for the nipple look familiar as an early percussion system. If this is the case, this would probably date this gun to about 1840 or later. The swell at the muzzle was likely done for ease in loading. And the Catalan style but stock really adds to the attractiveness of this gun. As you mentioned, this gun looks like a perfect example of a short, personal protection weapon from the period. The markings on this gun are also attractive.
As for myself, my main interest is in firearms. Especially Ethnographic firearms and some European. I collect, and even shoot selected originals from my collection. Only have a few edge weapons. I do hope this forum continues with Firearms postings. I have found there are very few interested in the Ethnographic firearms. Most of the guys are interested in the swords and armour. I have found the Viking Sword Web-Site to be fun and educational - and very addictive!!
Stuart: I sure do wish that Omani decorated Martini would grow legs and come running to mt house
Since we are on the European Forum, a couple of Spanish guns from my collection. Believe I've posted these before. Thanks again to everyone for your help over the many months. Rick.