A photograph of Richard Wagner, composer of such operas as as Der Fliegende Holländer (published in 1841) and Der Ring des Nibelungen (1876). The photo was taken by Franz Seraph Hanfstaengl in 1871, the year Wagner turned 58.
Photo via Wikimedia Commons, that wonderful source, and is in the public domain in the United States because it was published before 1923.