LUSIS is involved in the acquisition of national treasures.
In 2003, LUSIS acquired the Delacroix "Pyrenees Album" declared a "National Treasure" for the Louvre Museum. This work is presented to the public at the Louvre as part of an exhibition devoted to Delacroix inaugurated on April 7, 2004.
This is a book of drawings created by Eugène Delacroix during his stay at the pyrenean spa in "Les Eaux-Bonnes" in the summer of 1845.
2007 : the engine-turn lathe (« Tour à Guillocher ») of Count d´Artois, declared a "National Treasure", has been returned to the Chateau de Versailles after 200 years absence thanks to the patronage of LUSIS.
Invented by the laborer Guillot and executed by Antoine Wolff in 1773, the engine-turn lathe had been delivered to Versailles castle for the Count d'Artois, brother of Louis XVI and the future Charles X. A type of large machine nearly a meter high, equipped with pedals and a set of cams, the lathe could draw curves to adorn watch boxes and gold coins as well as manufacture and refine locks and keys.
2008 : LUSIS donation to the Versailles Castle through the "Société Des Amis de Versailles".