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The flag of Mecklenburg–Vorpommern is the flag used by the German state of Mecklenburg-Vorpommern (also known as Mecklenburg-West Pomerania). Five official proposed flags were put forward in 1990, but all were rejected. In the end, a design by Norbert Buske, then a member of the Mecklenburg-Vorpommern parliament, was adopted. It was not preferred by German vexillologists. For a short time in 1990, an unofficial flag (the tricolor of Mecklenburg, defaced with its arms) was used.

Source: Wikipedia