SARAJEVO (Bosnia and Herzegovina), August 17 (SeeNews) - The Investment-Development Bank (IRBRS) of Bosnia's Serb Republic said on Monday it is selling 5,000 preferred shares representing a 20.98% stake in local lender Nasa Banka [BANJ:PIBB-P-A] for a total of 5.25 million marka ($3.2 million/2.7 million euro), it said on Monday.