List of artworks with contested provenance

[6][7][8] The Art Institute of Chicago, the only American museum to resist the seizures,[9] fought back in a court filing of its own, saying that "it had been legally sold by Grünbaum’s heirs".

[11][12] Recently there has been debate within the antiques industry regarding a bronze monkey held in the Louvre initially believed to be the work of famous sculptor Giambologna.

The Louvre monkey is simply too deep to fit the niche in which it was supposedly situated on the Samson and a Philistine fountain it was originally designed and created for.

Colin Wilson's monkeys, however, do match this drawing, are made of a gunmetal dated to the 16th/17th century, are unrefined, and are of a high lead content, all of which are traits of a work of Giambologna.

[13] Ernst Lederer, a well known art historian, has been "dazu bewogen" (induced) to "donate" this valuable painting to the Republic of Austria in return for an export license for a fragment of the large Lederer[14] collection which was destroyed at the end of the war by SS troops at Schloss Immendorf (including famous paintings by Klimt and Schiele) or like the textiles and drawings disappeared during 1938–1940.