Justinian I, AE Nummus, Carthage. 

Obv: Pearl diademed, draped, cuirassed bust facing.
No legend, Large six-pointed star within wreath. 

SB 283b, MIB 211; Sabatier 126. 

I couldn't find an image of this interesting coin anywhere,
so I have copied the image from Sabatier. Nov. 2010.