Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The issue of banknotes of the Hong Kong dollar is governed in the Special Administrative Region of Hong Kong by the Hong Kong Monetary Authority (HKMA), the governmental currency board of Hong Kong. Under licence from the HKMA, three commercial banks issue their own banknotes for general circulation in the region. Notes are also issued by the HKMA itself. In most countries of the world the issue of banknotes is handled exclusively by a single central bank or government. The arrangements in Hong Kong are unusual but not unique, as a comparable system is used in the United Kingdom, where eight banks issue banknotes.