Tag der Deutschen Einheit, is celebrated on 3 October and a public holiday here in Germany. It commemorates the anniversary of German reunification in 1990 when the Federal Republic of Germany (West Germany) and the German Democratic Republic (East Germany) were unified. Here is a 20 Euro Cent coin depicting the Brandenburg Gate in Berlin, with the Berlin mintmark "A". Throughout its existence, the Brandenburg Gate was often a site for major historical events and is today considered not only as a symbol of the tumultuous history of Europe and Germany, but also of European unity and peace. When the Revolutions of 1989 occurred and the wall was demolished, the gate symbolized freedom and the desire to unify the city of Berlin. Thousands of people gathered at the wall to celebrate its fall on 9 November 1989. The Berlin Mint After the end of the Second World War the mint ended in the Soviet sector of Berlin (East Berlin), and with the currency reform in 1948, new coins were ordered to be made of aluminum. In 1952, the mint started to issue new German Democratic Republic (GDR) coins. With the closure of the Muldenhütten mint in 1953, Berlin was the only mint in the GDR. The last GDR coins were minted in 1990. Due to the monetary, economic and social union of the GDR and the Federal Republic, the then named VEB Münze der DDR was appointed in May 1990 to produce Deutsche Mark (DM) coins. The first DM coins were minted on June 16th 1990, and the VEB Münze der DDR became the Staatliche Münze Berlin. Today, they account for 20% of the German coins minted.