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Aurelian AD 270-275 AE Antoninianus Ticinum mint AD 274-275. 4.11 g. 

IMP C AVRELIANVS AVG - Radiate bust right, cuirassed
SOLI INVICTO - Sol walking left between two captives, holding globe and raising right hand, star in left field 

Mintmark TXXT.

RIC Vi, 154