[oldnretired1]

I think you're on the right track. Looks like a naval saber to me. Not ceremonial but intended for actual use.
  In 1841 one had to protect oneself either in service or in personal life. Swords, daggers and pistols were normal to carry both for military and civilians. Military officers and well-to-do civilians had reason to beware for their safety.
  Embellishment was what one could afford at the time if desired.
  Also the inscriptions look french to me. I could be wrong on that as I don't speak either spanish or french fluently enough to say I know for sure.