Could have had a rough trip through the mail (I've seen Canada Post do MUCH worse), could have been owned by someone (i'd say a child but considering its from Ultimate Collection, well...) who liked to handle it and showed it off without considering the value, maybe it got accidentally mixed in to a lot given to someone's kid, who knows. Point being, I'm sure there's a reasonable explanation. I'd have to think the current seller wasn't the original owner...
Unfortunate but we must remember that to 99% of the world's population, this is just a silly piece of cardboard...