Trajan Decius. AR Antoninianus. 21.8 mm, 2.94 g.

IMP TRAIANVS DECIVS AVG, radiate, draped and cuirassed bust right, seen from the back.
ADVENTVS AVG, emperor on horseback left, holding sceptre and raising right hand.

RIC 1b; RSC 6.
Very rare with this obverse legend.
This coin found in England, PAS no. 431008. Image courtesy of the Isle of Wight Museum, inv. IOW2011-4-102.