Contemporary manuscript copy of the Violin Sonata in E flat, Opus 12, no. 3, in parts. 39 p. (piano) and 14 p. (violin), oblong quarto (ca. 21.9 x 29.7 cm), hand-ruled paper of 8, 9, and 20 staves, ownership inscription of Prince Ferdinand Kinsky (”F.K”) to title, later ownership inscription of Princess Elisabeth Kinsky, unbound.Notations in brown ink, the piano part on up to five two-stave systems, the violin part on up to nine single-stave systems, per page.