A small bronze coin of a type called a nummus fraction. Made in AD 317-324 in Rome, it is one of the few examples of this coin from the Seaton Down hoard. The coin was issued to mark the death of Maximian and the reverse depicts an eagle which signifies the Emperor ascending to heaven. The coin was issued by Constantine I to commemorate his adopted grandfather (and incidentally rival for power).
This object is on display at RAMM in the Making History gallery.