Drachm ca. A.D. 147-191 Parthian Numismatists - the scholars who study coins - refer to the front’ side of the coin, which usually features the head of a person or god, as the obverse,’ and the back’ side as the reverse.’On the obverse of this silver coin, a bust of the king faces to the left. He has a long beard rendered with vertical lines, and wears a domed hat with earflaps (called a tiara’) with a diadem (the headband worn by victorious athletes in ancient Greece) tied over it. The tiara is decorated with indistinct protrusions. He also wears a torque or necklace around his neck. His large eye is represented by a raised dot between two thick lines which serve as his eyelid. A border of dots surrounds the image.The reverse of this coin is in poor condition, in part due to having been struck by a very worn die. Based on comparisons with other coins, it is safe to say that the reverse shows a seated man facing right. He wears sleeves and trousers under a cloak, as well as a diad