The details of what could be the most expensive single-owner auction in history are starting to take shape.

On Wednesday evening, Christie’s announced highlights from the late Microsoft co-founder Paul Allen’s estate, whose roughly 150 artworks are anticipated to bring in more than $1 billion. Allen died in 2018.

Topping the list is a Cézanne landscape which carries an estimate “in excess of” $120 million. A Van Gogh landscape and a Seurat interior are both estimated at $100 million. Together, estimates for the top 10 paintings announced by the auction house total $765 million.

The sale, whose proceeds will go to charity, will possibly be the most extreme test of the art market ever, but it comes at a time of deep uncertainty in the the global financial markets. The quality and rarity of Allen’s artworks are unquestionable; the prices, however, are steep enough to give even billionaires pause.

The auction will take place in New York in two parts—an evening sale on November 9, and a morning sale on November 10. Check out some of the highlights and estimates (all of which are listed “in excess of”) below.

This article was provided by Bloomberg News.