Caligula, AE of Hispania Citerior Bilbilis. 37 - 41 AD, 14.93 g. 

C CAESAR AVG GERMANICVS IMP, laureate head right.
[MVN] AVG BILBIL C CORN REFEC M HELV FRONT, II VIR within oak wreath. 

RPC 400. SNG Cop. 621. 
 
Courtesy of Helios Auction 5, March 2011