Antoninus Pius. AE Sestertius. 145-161 AD. Rome. 

ANTONINVS AVG PIVS PP IMP II, laureate head right
TR POT XX COS IIII S-C, Securitas seated left on chair
 formed by two cornucopiae, holding sceptre. 

RIC 967; Cohen 1008; BMC 2016; Sear 4252.

With permission of Roma Numismatics, October, 2009