Auction house finishes round of sales from so-called Horten collection after rebuffing calls by Jewish groups to suspend it

Request comes after auction house ignored Jewish groups' pleas to drop sale of jewelry belonging to widow of man who bought Jewish businesses sold under duress in 1930s

Kunsthaus Zurich announces commission of independent experts to clarify origins of works; 'We bear a great social responsibility,' director says

'Murnau Mit Kirche II' belonged to Johanna Margarethe Stern, who was murdered in Auschwitz, and was returned to her descendants last year by a Dutch museum

Prof. Curt Glaser sold 'Dance on the Beach' under duress in the 1930s. Now, the 1906 masterpiece is expected to fetch $15-25 million after a deal was struck with the current owner

1911 painting of Russian-born artist's father was auctioned last November for $7.4 million, capping a tumultuous history

Jewish philanthropist will retain renowned Austrian artist's piece after reaching agreement with family who said it was sold under duress due to Nazi persecution in pre-war Europe

Germany finds 16th-century breastfeeding statuette sold in 1936 by collector Jakob Goldschmidt under unfair financial conditions

Sompo Holdings denies allegations in lawsuit filed by family of Jewish banker who owned 'Sunflowers,' which says he was forced to sell artwork

'The Father' sold by heirs of David Cender, who survived Auschwitz but never recovered the piece, which the Jewish painter purchased for himself after it reemerged following WWII