I agree with all of these points, especially that TPGs should regard cabinet friction and bag marks as wear, I really don't care how it occurred after it was struck, it is wear. And many MS60-61 coins, as I have alluded to in another post, require quite a leap of faith to be seen as Mint State, even given the dubious latitude of conveniently categorising some wear as 'non-circulation' wear ... my opinion! I just prefer to take a coin at face value, comments from sellers and dealers such as 'small scratch across the face that doesn't detract' (okay an extreme example!) wind me up and smack of estate agent style listings!