This sword is arab, Yemeni. There was a similar sword posted on SFI a while ago. Unfortunately, no one knew anything of these swords.
SFI Sword
Ive just realized something, these swords look very much like the swords in the book "Islamic Swords and Swordsmiths" by Dr.Uncal Yuncel. Portraits 56,57,58,59. Except those had slightly curved blades and were made in the mamluk period, 15th century.