In my estimation, those are all very nice Doug. The look on JD's face on the third coin (over-struck you say?) is really sad don't you think?
I see too much resemblance to Manlia Scantilla there. That woman had plenty to be sad about and Julia was not yet in Rome so the possibility of confusion at the mint is high. http://www.acsearch.info/search.html?id=6980 To see the undertype, rotate the obverse 1/8 turn clockwise and look for an eye and nose in the hair. I can not ID the large lump on the reverse.