Turkoman thank you so much for this updated and clearly well informed update and perspective. I would be in accord with the suggestions on date of blade, and personally would be inclined to early 19th c. The inscriptions are what is most unusual, and here again, the Trabzon and Ottoman attribution seems most plausible. These kinds of engravings are indeed seen on many blades of the types of edged weapons from these regions, and obviously the hilt is of Ottoman form.........my original notions toward Arabia were ...a few years ago
Still wish I had it! most esoteric item not often seen in the usual collections here.