Antoninus Pius AE As, 23-25mm; 10.10g. AD 140-144. 

ANTONINVS AVG PIVS P P TR P COS III, laureate head right. 
SECVRITAS PVBLICA, S-C across fields, Securitas standing left, 
holding sceptre and resting left elbow on column. 

BMCRE IV p. 220, * note; Cohen 784; RIC 691.
Rare.

With permission of cngcoin.com, the AK Collection.