Two working sketches of Paganini's head, apparently drawn from life, together with a pianist (possibly Sivori) and a violinist (possibly Belloni), executed in lead pencil on paper (21 x 15.5cm), French school, probably 1830s. These sketches of Paganini's head give the very appearance of having been done from life, possibly as the great violinist was performing. (http://www.sothebys.com/en/auctions/ecatalogue/2013/music-continental-books-manuscripts/lot.461.html)