3-De Sade (1979). Book-object by Norman Conquest. Mixed media: book, blood, and spike. One of three examples. [photo: bps]
Having seen this work up close, I can report that the spike driven through the cover served to elevate the edition as a display stand.
According to the artist this was not intentional, but “a fortuitous perk.”
More remarkable was how Conquest managed to achieve the nearly identical three-legged bloodstain on all three covers.