Autograph sketchleaf for the Hammerklavier Sonata, including drafts of the fugue subject in the last movement, with unidentified sketches, apparently studies of fugal subject and answer, no place/date. 1 p., oblong quarto (ca. 22 x 29 cm.), 8 staves, notated in brown ink on five stavesfitted cloth folder and box, black-gilt label and spine, one hole affecting one note, two small ink stains.