PARTHIAN EMPIRE. Artabanus IV (c. AD 10-41). Æ chalkous (2.12 gm; 15mm x 12mm). Mithradatkart mint. S63.32var. (challis to left of monogram). (Artabanus II (c. AD 10-38) according to Sellwood. (unrecorded by Sellwood). Nice original green earthen patina. Choice Nice VF. Rare.