JulIa Domna AR Antoninianus. Struck 215 AD. 

Obv: IVLIA PIA FELIX AVG, diademed & draped bust right 
on crescent
Rev: LVNA LVCIFERA, Luna, cloak floating around head, 
driving biga galloping left.

RIC 379a [Caracalla], RSC 106.

Courtesy of Roma Numismatics, May, 2010