US dollar was sold at the price of 24,516 rials at Iran's forex center on Saturday.
British pound was also presented at 38,043 rials, while euro was traded at 32,757 rials, the IRNA News Agency reported.
Euro, British pound and US dollar were sold at the prices of 32,776, 37,993, and 24,516 rials respectively on Thursday.
The new foreign exchange center was officially inaugurated on September 24. Some 17,356 applications have been registered at the center so far.
The new center allows importers of goods including truck tires, construction equipment and synthetic fibers to buy dollars at a 2 percent rate cheaper than the street rate at any given time.
The government maintains an official reference rate of 12,260 rials to the dollar, but only a limited amount of foreign exchange is available at this rate.
Iranian government plans to use revenues from petrochemical sales and 14.5 percent of its oil revenues to provide dollars for the center, central bank governor Mahmoud Bahmani said in September, 2012. He did not give an absolute figure for the amount of dollars to be supplied.
"With the distribution of currency in this center, the exchange rate in the market will go down, because some of the demand (for dollars) will be met in this center and the pressure of demand will be removed," Bahmani was quoted as saying.