A New York auction of jewelry and artwork from the estate of philanthropist Brooke Astor is now scheduled for September.
Sotheby's said Tuesday that the auction has been pushed back from April due to its "wide range and volume."
The sale now will be held over two days, sometime during the week of Sept. 24.
The proceeds will benefit Astor's favorite charities, including the New York Public Library, the Metropolitan Museum of Art and New York City schools.
Astor died in 2007 at 105.
Anthony Marshall was found guilty in 2009 of exploiting his mother's dementia to help himself to millions of dollars. He's free pending appeal.
The auction will include property from Astor's Manhattan apartment and her country house in Westchester County.