Aes grave (heavy bronze) is a term in numismatics indicating bronze cast coins used in central Italy during the 3rd century BC, whose value was generally indicated by signs: I for the as, S for semis and pellets for unciae. Standard weights for the as were 272, 327, or 341 grams, depending upon the issuing authority.
Janiform head of Dioscuri, hair tied with band; above, denominational mark
Head of Mercury in petasus, left; above, denominational mark
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