British currency in the Middle East already risen in value against the pound sterling as a result of sterling's devaluation in 1967, and so the new Omani rial was not equal in value to the dinars in the nearby territories. The currency units that are used in Israel, Jordan, Iraq, Kuwait, Bahrain, Oman, and the Yemen are all descended from the pound sterling unit, while the currency units that are used in Saudi Arabia, Qatar, and the United Arab Emirates are all descended from the Maria Theresa Thaler. This largely explains the factor of ten difference in value on average between Bahrain, Kuwait and Oman on
Irish pound changeover not related with the issue of coins. Decimalisation was overseen by the "Irish Decimal Currency Board", created on 12 June 1968. It provided changeover information to the public including a pamphlet called "Everyone's Guide to Decimal Currency". The changeover occurred on Decimal Day, 15 February 1971. In the 1970s, the European Monetary System was introduced. Ireland decided to join it in 1978, while the United Kingdom stayed out. The European Exchange Rate Mechanism finally broke the one-for-one link that existed between the Irish pound and the pound sterling; by 30 March 1979 an exchange rate was introduced. This period