When I bought this it was sold to me as a Pergamon Mysia coin 200BC-100BC. I am not an expert in ancients but when I started to attribute I discovered it was not as listed. None of the Pergamon had the same item in the right side of the field on the reverse. I discovered that item is called an amphora. From another coin like it I saw online it is probably 155BC-145BC or thereabouts. I think it might be worth more as the Tralles Lydia than Pergamon Mysia? I paid $100 for it so I think I did OK.