18)
Treveri (Trier) mint, A.D. 309
RIC 830
Obv: IMP CONSTANTINVS P F AVG
Rev: MARTI PATRI CONSERVATORI - Mars, helmeted, nude, standing, facing
right, holding reverse spear, resting shield on ground
PTR in exergue; T in left field, F in right
25 mm, 7.6 g.