I had a knife that was made for our upcoming reunion. The maker (private party) left the knife in a buckskin sheath. I put the knife in my safe. Last week I took the knife out and as you can see, it has a blemish. I tried x-fine steel wool with oil and it did not touch it ... it almost appears to me (a novice) that the blemish is inside the blade .... looking for a way to safely remove the blemish without harming the blade. https://1drv.ms/u/c/47c53b51731cc997/IQC4-_Uftr-LTZ3GxtBU99VzAYLm6WHGycQFx8owX44zgFE?e=eRDb0j