The symbol behind the second group coins is a fireplace carving based on a design found in Persia and the phrase "Ardashir's fire" implies a royal fire that was ignited in the beginning of every shah's reign. The section of the supporting basis of the fireplace has some similarity to the Achaemenid throne. Some hanging bands are carved in the end of an open headband, which is the royal symbol in Persian traditions. Therefore, the petroglyphs behind these coins show Ardashir's concern for showing himself not only as the Achaemenids' rightful heir, but also as a religious Zoroastrian. In the makeup of head and hair, Ardashir was loyal to the Parthian traditions in the first coins and chose a crown similar to the crowns of Mithridates II's period. However, in the final years, Ardashir's main crown was from a type in which a part of the hair was decorated in a globe above the head; the globe and the lid were covered with a thin silky net and some bands were hanging behind it.