Ya know, that arrow almost looks like it's not turkey fletch. Awfully dark and kinda soft looking but I'm wondering if maybe it's not some type of owl or hawk. The nock area does look like pictures I've seen of Indian arrows with the shallow nock grooves for a pinch grip. Is that wrapped with real sinew or is it thread?
If it's real sinew, you might have something original but if it's thread, it's probably something someone made a long time ago to duplicate an Indian arrow. Either way, pretty cool. I bet you could straighten it pretty easy too.