For an example by the same artist depicting similar documents on one side, see Robert W.L. Kleiner, Chinese Snuff Bottles from the Collection of Mary and George Bloch, Hong Kong, 1987, col. pl. 290.
The author states that this subject has wrongly been described as the 'contents of the waste paper basket' because of the frayed edges depicted. However, the fragments are usually copies of well known calligraphic extracts or paintings