Hi OOK,
Welcome to the Forum. What you have here appears to be a Balkan KARD. Yours is likely Ottoman Turkish, but the style is found throughout the Balkans, Persia(Iran) and even India.
I am sure that others will reply here and clarify where it comes from.
There are many blade collectors in the States who regularly post here, so I am sure that ongoing you will develop contacts with similar minded collectors.
Stu
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