The East German mark, also known as the ostmark or GDR mark, was the currency of East Germany from 1948 until 1990 when it was replaced by the Deutsche Mark after German reunification. The ostmark was equal in value to the German mark, but it could not be traded internationally. The currency was printed with various denominations, including 1, 5, 10, 20, 50, and 100. Other terms used to describe the East German mark include DDR mark, East German currency, and East German coin. Despite being replaced almost thirty years ago, the ostmark remains a symbol of East Germany's history, culture, and identity.