This Trajan is a fouree, you can see some bronze showing in a few spots.
The obverse was used in A.D. 116 (cf. RIC 362); while the reverse is from A.D. 101-2 (cf. RIC 52). Also note the spelling on the obverse of O[P]TIMO.
Trajan
circa A.D. 116
Fouree denarius
17mm 2.7gm
IMP CAES NER TRAIANO O[P]TIMO AVG GER DAC; laureate and draped bust right.
P M TR P COS IIII P P; Mars walking right, with spear and trophy.
