File:Mozart (unfinished) by Lange 1782.jpg

The above is regarded by historians as the most accurate surviving likeness of Mozart, painted when the composer was 26 years old. It is a section of an unfinished 1782 portrait by Joseph Lange.

The splotchy texture of the composer's cheeks, visible in the original painting on display at the Mozart Museum in Salzburg, was verified by Mozart's contemporaries.

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Source: http://www.mozartforum.com/images/Mozart_(unfinished)_by_Lange_1782.jpg