Currency Minting Estimation and ValueCOINS: Amount.              Copies1/2 Dua (70 Naira): 1 Dua (140 Naira):2 Dua (280 Naira):5 Dua (700 Naira): 10 Dua ( 1,400 Naira): Also in Paper20 Dua (2,800 Naira): Also in Paper50 Dua (7,000 Naira): Also in PaperPAPER: Analysis.................1 Ruba= 12 US Dollars( 1,000 Naira= 1 Dollars in Local Market...