Hejaz riyal Hejaz riyal The riyal (Arabic:ريال "") was the currency of the Kingdom of Hejaz between 1916 and 1925. It was subdivided into 20 qirsh (). The riyal was a silver coin the same weight as the Ottoman 20 kuruş coin but was minted in .917 fineness rather than .830 fineness. The Hejaz riyal was replaced by the Saudi riyal in 1925 at par. In 1916, bronze coins were issued for ⅛, ¼, ½ and 1 qirsh together with silver 5, 10 and 20 qirsh. Gold 1 dinar coins were also minted. Turkish and Egyptian coins and Maria Theresa thaler, were
São Tomé and Príncipe dobra São Tomé and Príncipe dobra The dobra is the currency of São Tomé and Príncipe. It is abbreviated Db and is divided into 100 cêntimos. The first dobra (STD) was introduced in 1977, replacing the escudo at par. Due to inflation, in 2018 the dobra was redenominated at a rate of 1000 to 1, and given the new ISO 4217 currency code STN. São Tomé and Príncipe signed a deal with Portugal in 2009, linking the dobra with the euro. The exchange rate was fixed at 1 EUR = STD on 1 January 2010, which means that the new dobra