Autograph music:- (1) Sketch for the mazurka in C, op. 56, no. 2, by Fryderyk Chopin; circ. 1843. Two leaves (ff. 1-2), 215 mm × 280 mm, formerly one bifolium, the music being written on the first recto. The sketch contains most of the thematic material, written in sections each ending with a ...