Mintage of these coins from the beginning to the accession of Mohammad Reza Pahlavi from 1941 to 1977, including coins of the quarter, half, one, two, and a half, five, and ten Pahlavi, and the last date of the coinage seen on them is 1979 ( ۱۳۵۸ ). The purpose of coinage with a date that has not yet been reached is to prepare the coins with the date of the day for distribution in the new year. Therefore, it can be assumed that Pahlavi coins dating back to 1979 ( ۱۳۵۸ ) after the 1979 revolution was illegally withdrawn from the mint. Also, the existence of coins with the Islamic-solar calendar after the changing of the calendar from the Islamic-solar to the Imperial/ Persian is very important because it suggests the fact that the regime of Mohammad Reza Pahlavi after the change of the calendar from the Islamic-Solar to imperial/ Persian and that confronted with religious opposition, despite the passing of three years since its launch, intended to restore the origin of the Islamic solar calendar.