Julia Mamaea, AR denarius, AD 222-235. 15 mm, 1.39 g. 

IVLIA MAMAEA AVG, diademed and draped bust right.
IVNO, Juno, veiled, standing left, holding patera and sceptre. 

RIC IV 340; RSC 31; PAS 891763. Not in Sear.

Extremely rare.

Found in England.