Watch List notes:

Aurelian, 270-275 Antoninianus Siscia 274, billon 21.00 mm., 4.05 g.
Radiate and cuirassed bust r. Rev. Emperor and Concordia standing facing each other, clasping hands; below, S and in exergue, XXI[.] . RIC 244. C 60.

Wonderful style, minor areas of weakness, otherwise About FDC