Rarer type of reverse.
Roman Imperial
Julia Domna (wife of Septimius Severus, 193-217), Denarius, Rome mint
Obverse: draped bust right
IVLIA AVGVSTA
Reverse: the goddess Isis in a tall headdress standing to the right, holding a baby, little Horus and by her breast and patt, her left leg on the bow of the galley, behind her the sacrificial altar
SAECVLI FELICITAS
Weight 3,16 g.