I agree with your findings. I also checked Snow's attribution guide and he has a number of varieties listed with one or both 8's broken. He also has only one listed that has an MPD along with broken 8's, and it does not match your coin. It could be a newer find that is not listed in my edition of the attribution guide. For most of the varieties he gives either a one or to star rating, so I imagine that there is not much of a premium attached, but it is still a neat find.