I remember looking this one up a while ago. There was another poster that had one I believe a little more complete than yours. Cool break Rick!
Let me see if I can find it. May have posted it so I'll go back and look! Btw good eye on that one, I may have overlooked that one!
I don't believe the OP's coin is a retained cud. The lower portion of the Die Crack does not go to the left, meeting the rim. (that thin line that might be a die crack is too thin, and does not show a complete break) It would have become a retained cud in another few thousand strikes, or so.......imo