The Art Newspaper has Christie’s $18-25m Kandinsky, Rigide et courbé (rigid and bent) (1935), for November’s sale in New York. The work is guaranteed:

The painting was first bought in 1936 by Solomon Guggenheim directly from the artist and was included in eight exhibitions through 1949 in New York, Philadelphia, Pittsburgh, Chicago, Baltimore and Charleston. When the Guggenheim Museum was looking to raise funds in 1964, the picture was among a group of 50 by the artist sold at Sotheby’s in London, raising an uproar in the New York art world. (A letter to the editor of the New York Times called it “shocking, grievous news”.) The painting has remained with the same American family ever since.

Kandinsky painting bought directly from the artist by Solomon Guggenheim returns to auction (The Art Newspaper)