Daniel Cassady is a reporter covering the business practices, money, and machinations of the art world. His writing has appeared in The Washington Post, The New York Post, Forbes, and The Art Newspaper. He welcomes good conversation and heated debates. You can reach him at dcassady@artnews.com and on Twitter @danielcassady.
Germany's Ketterer Kunst auction house is celebrating its 70th anniversary with an evening sale of German Expressionist works, American Pop art including a full set of screen prints from Warhol's…