The product is a Roman Empire bronze coin from the era of Constantine II, minted in Thessaloniki, Greece during AD 337-340. With a weight of 3.3 g and a denomination of AE3 (Nummus), this coin features an obverse depiction of Constantine II in a laureate, draped, and cuirassed bust facing right, accompanied by a 4-line legend on the reverse. Certified by NGC with a grade of Choice Fine (Ch F) and a certification number of 8232461-011, it holds historical significance as a piece of Ancient Roman Imperial coinage.