from enwiki en:Image:Violin.JPG, cropped from early 20th century photo postcard https://creativecommons.org/publicdomain/mark/1.0/PDMCreative Commons Public
of the musical autograph of Violin Sonata No. 5 Op. 24 by Beethoven. Spanish Partitura autógrafa de la Sonata para violín y piano n.º 5 Op. 24 de Beethoven