Constans, AE4. 16 mm. Rome. AD 337-340.

DN FL CONSTANS AVG, laurel and rosette-diademed, draped, cuirassed bust right.
SECVRITAS REIP, Securitas standing facing, looking right, left 
elbow leaning on column, legs crossed, holding sceptre.

Mintmark R leaf Q.

RIC VIII Rome 16: LRBC 592; Voetter 11.
Rated C2.

ebay sale, Oct. 2014. (wrongly attributed by the seller as RIC 23)