More interesting type of bust.
Large flan characteristic of the sixth issue of the Siscia mint.
Roman Imperial
Aurelian (270–275), Antoninianus 272-274, Rome mint
Obverse: radiate and cuirassed bust right
IMP AVRELIANVS AVG
Reverse: Emperor togate standing to right, clasping the hand of Concordia standing to left, star and Q in exergue
CONCORDIA MILITVM
Diameter 23 mm, weight 3.39 g