Bronze AE4, 16mm, 2.08gm, issued AD 317/318 Rome mint.
Obv: DIVO CLAVDIO OPTIMO IMP, Laureate veiled head right.
Rev: MEMORIAE AETERNAE (RP in ex.), Eagle, standing right, head left.
References: Sear 16387, RIC 115.
Issued under Constantine for his purported ancestor, Claudius II.