I picked it up at the beginning of the month because of the rev. die crack. It fits Rick Snow's description of the S-4 although it doesn't show the RPD. I have to research it further.
OK I researched it..... It is a Poliquin 12 same as a Snow 7. I have Snows 3rd Edition so it is something that has been added to the 4th Edition. A retained cud develops later