Imagine that the money used by medan people is different from what surabaya people use? What if it happens in many areas? History records that this difference has occurred in Indonesia, namely when the circulation of Oeang of the Republic of Indonesia was disturbed. At that time, the government issued a temporary regional money, which was later referred to as the Oeang of the Republic of Indonesia Region. ORIDA: Oeang Republik Indonesia Region 1947–1949 is a book that not only became a reference for numismatics activists, but also framed Indonesia's historical heritage. By showing the story behind each of the regional money, its photographs, and explanations, the book manages to capture how the Republic tried to defend its sovereignty in the early days of independence. This book will obviously be an important foothold and guide for every nation's children to understand the history of Indonesia through the collection of currencies circulating in its time.