Hi Fernando,
A lovely sword and happily still united with its scabbard. The hilt shape looks quite typical of the 2nd half of the 18thC, reminiscent of quality hunting and military style hangers and of the fluting on some spadroon hilts of the period. The blueing looks a bit different from what I'm used to more like heat blueing than chemically induced, might be the photos giving that impression though. Nice for you to have a piece with definite home-grown provenance I would like some 17th/18thC Scottish pieces but the prices
. If your sword ever has the desire to travel I can thoroughly recommend a nice wee place in Scotland that welcomes Portuguese emigres.
My Regards,
Norman.