The Dutch bank ABN Amro has filed a claim for A Bend in the Herengracht, a 17th-century painting by Gerrit Adriaensz Berckheyde which financier Louis Reijtenbagh had used as collateral for a now-delinquent loan. Problem no. 1: Reijtenbagh used the same painting as collateral for a 2006 loan (also delinquent) from JP Morgan Chase. Problem no. 2: He sold the work to the Rijksmuseum last September.