Sasanian coins come are from ancient Persia, which is modern day Iran. They date from the 3rd and 4th century, and they were contemporaries of the late Roman empire before it split into the Holy Roman empire and the Byzantine empire. It was before Islam, and their religion was called Zoroastrianism, which has something to do with a fire altar, which is why there is a fire altar flanked by two people on the back of each coin. If you are interested in learning more, and seeing the names of the rulers and dates on specific coins, click here.
