In looking through a portfolio of 25 design drawings for glasses, which had been allocated to the MAK by the Nazi Central Office for Monument Preservation in June 1940, provenance researchers came across the name and address of Dr. Siegfried Fuchs. In cooperation with Wien Museum and the Austrian National Library, evidence could be produced that Dr. Siegfried Fuchs had been forced to give away his collection in the Nazi era.
 

On 28 June 2006, the Advisory Board advocated the restitution of the 25 drawings.

The restitution took place on 24 November 2016.