Sestertius

Roman Sestertius

My club had a dig today, it was sunny but there was a bitterly cold wind. A hammered coin was found early on, then a Roman brooch and medieval seal matrix.
I found a copper Roman sestertius, but it has no markings:
weight = 12.38g, diameter = 27.3 to 27.8mm, thickness = 3.33mm
Sestertius (semis-tertius) means 2½, the coin's original value in asses, and is a combination of semis "half" and tertius "third", that is, "the third half". The first half was 1½, the second was 2½.
Two buzzards glided overhead.