Watch List notes:

Nepotian. 351 AD. Centenionalis, 5.40g (6h). Rome. Obv: FL NEP CONST - ANTINVS AVG Bust laureate, draped right, seen from front. Rx: VRBS - ROMA around, R E in exergue, Roma seated left above shield, holding Victory on globe and spear. Bust var. of RIC 203 (R3), officina E=5. Bastien, Magnence, p. 208. Cohen 4 (160 Fr.). On this coin Magnentius usually wears a diadem composed of rosettes alternating with pairs of laurel leaves. Our coin, however, shows him wearing a laurel wreath only, with a single rosette or medallion at the top of the wreath. Somewhat corroded, otherwise VF

The usurpation of Nepotian at Rome against Magnentius lasted only thirty days, apparently in c. May-June 351 AD, not 350 as traditionally stated. The obverse legend on our coin stresses Nepotian's descent from the family of Constantine the Great: he was the son of Constantine's sister Eutropia