Coins from Persia
Persia is an area in Western Asia and Central Asia, Geologically, it is situated between the Zagros Mountains to the west, the Caspian Sea and the Kopet Dag to the north, the Armenian Highlands and the Caucasus Mountains in the northwest, the Strait of Hormuz and Persian Gulf to the south and the Indus River to the east in Pakistan.

As a historical region, it includes Aria, Baktria, Chorasmia, Gandhara, Margiana, Media, Persis and Sogdiana - even if this is not the strict geological defintion of the Iranian plateau.