Autograph manuscript, studies of fugue for Beethoven’s student Archduke Rudolph (undated). 4 leaves (7 written p.): p. 1-2 with text notations, p. 3 with four lines; p. 4 blank, p. 5 with notations by Beethoven in 3 1/2 lines (above) and 5 lines (below), p. 6 with 5 lines in the middle, p. 7 with musical notations and the last p. with 10 lines of text.