I just got a 6/2000 lg. Sebbie on a trade. The front of the blade has a large patch of discoloration which I was told about. But the finish of the blade is much closer to satin than stonewash, comparing it to my Microtechs. And there are no markings any place on the blade (CRK, born on date, etc). Could it be there was an amateurish attempt to polish the blade that I was not made aware of? Someone please respond...this is my first Sebbie.