I think he's seeing the reflection of his finger on the edge. You can make out his finger and part of the phone/camera on the blade face.
I try to watch for that, on my pics. If possible.
My guess would be, near NOS. Edges too crisp, scales good, blade Brite, no signs of honing. And the collars look right, and in excellent condition...not smashed from tightening, as I've found the in the wilds. :tu