After the Bastille was stormed in the 1789 revolution, the parchment was recovered from a crack in the cell wall, sold several times, and published by a German doctor in 1904.
In 1929 the husband of Marie-Laure de Noailles, a direct descendant of Sade, bought the manuscript, passing it down to her daughter Nathalie. She entrusted it to a friend who sold it to Gerard Nordmann, a Swiss collector of erotica.
France's high court ordered the work to be returned in 1990. But in 1998 the Swiss federal court ruled Nordmann had bought the work in good faith. When Nordmann's heirs offered to sell the manuscript to French collector, Gerard Lheritier, in 2012, Sade's heirs tried to claim it.
"It took me three years of tough negotiations," said Lheritier, founder of the private Museum of Letters and Manuscripts in Paris.
The money from the sale was split between Sade's heirs and the scroll's Swiss owner.