So I went into my local pork store last week and just mentioned pork belly to the owner, this week as I was leaving he mentioned he got some with "rind
I would guess it is because he's planning to remove some of the fatigued steel at the edge with stones, saving a little bit of height.
great! -- thanks for the clarification
Looks good so far, although I didn't understood why you haven't removed that chip completely using grinder.
If you can get a clearer picture of the inscription it might be easier to identify.
Also, is there any writing on the back?