Caligula AE sestertius
Image rights: wildwinds.com


     Caligula, AE sestertius, (23.50g) Rome Mint, 
C CAESAR DIVI AVG PRON AVG P M TR P III P P, Pietas seated left, holding patera, PIETAS below.
Caligula sacrificing before hexastyle temple, one attendant leading bull to altar, a second holding a patera, DIVO AVG S C across fields. 

RIC 51; BMC 69, Vagi 5.