Those are a cool Minie, Jimmy. I have always thought them to be CS too and I know ETEX thinks so too.
It is somewhat similar to what Skip and Meigs labled a Baby Austrian, but not quite. I don't believe it is in a book, but ETEX, Terry, PIA or Skip can chime in. I have seen quite a few in the Trans Miss, including a few Terry had and Gary had some too. There were 4 in the recent batch I got from Holly Springs, MS and Brian Riehl grabbed two of them from me at Mansfield and I kept two. Hopefully the next group I am getting next week contains some more.