GSI Institutions
Currently, institution data on approx. 380 auction houses from Germany, Austria and Switzerland active in the years 1901 to 1945 are documented and can be searched via browser tags and a search function.
In addition to institution names, addresses and the key players involved (owners, managing directors, experts, auctioneers, curators, etc.), there are also thematic focuses and further information on the history of the institutions as well as relevant research literature.

Auction House Helbing Researchers are currently aware of around 1,100 so-called hand copies and protocol catalogues of the auction catalogues of the Munich gallery Hugo Helbing, which was active in the auction business from 1887 to 1937. Within the framework of a 