Faustina II. AE 20 of Dium, Macedonia. 

FAVSTINA AVG, draped bust right
COL IVL AVG DIENSIS, D-D (all Ds retrograde), Minerva 
standing left holding patera and resting on sceptre, 
serpent at feet to left. 

Varbanov 3417.

With permission of Roma Numismatics, March, 2010