Tampered PSA case or not? Need opinions

I've heard from the seller who confirmed that he personally had the card graded at the National convention last year in Baltimore and has a picture of this and two other cards (shown below) that were graded at the same time that have consecutive serial #'s. He also gave me the submission order # and his PSA account password in case I want to investigate further (which I don't). I think the consensus is that the case looks fine and may have sustained minor damage at time of assembly or over the course of the last year. I want to make it absolutely clear that I never, in any way, was accusing the seller of any wrong doing...I just wanted/needed some confirmation and I appreciate everyone's input.