PONTOS. Amisos. Ae Orichalcum bronze . Greek Pontos, Amisos. Circa 120-63 BC. AE (7.07g, 20mm) time of Mithradates VI. Aegis with gorgoneion in the centre. AMI-ΣOY, Nike walking right, holding palm over shoulder with both hands, monogram to left and right. BMC 72 var, (monograms). orichalcum gold color. Orichalcum was a valuable golden-colored brass alloy (copper and zinc) used by Romans an Greeks to mint coins . Valued for its gold-like appearance, it was considered more valuable than copper. Will be shipped registered and insured.