It's very nice karabela. The hilt is not typical but the handle is just like those described in Polish books as "war karabelas". I would call it Turkish, and this is probably Turkish with European blade of characteristic profile for those from 17th century. European blades with Turkish hilts are nothing uncommon, and are often seen together. Those markings are well known for me, and appearing quite often, thought I must have sclerosis because I can't remember where: nimchas?, schiavonas?
come on, help
Conclusing: Turkey, ca. half of the 17th century, blade European (Italy?).
And it was bought by my countryman
