Artwork created by the late Amy Winehouse and former Libertines frontman Pete Doherty using their blood is expected to fetch between £50,000 and £80,000 at auction.
The piece, entitled Ladylike, is said to be an artistic representation of Doherty's one-time band the Libertines combined with a small self-portrait Winehouse painted using her blood.
Speaking of their work, budding artist Doherty told the Metro: "Blood plays the starring role in my work. Sweat and tears are often waiting in the wings.
"Amy was on the phone to her dad when she did that [painting]. She said, 'Dad, I'm with Pete and he's making me draw with my blood!' He didn't like me much, her dad."
An undisclosed percentage of the proceeds made from the auction, which will take place at London's Cob Gallery, will be donated to the Amy Winehouse Foundation.
Edward Rising from Cob told the Independent: "The popularity of these two legends will certainly help drive up the price."
The Back to Black singer died from alcoholic poisoning at her north London home in July 2011 after a drinking binge following a period of abstinence. An inquest recorded a verdict of misadventure.
Her bloody painting joins the list of bizarre celebrity collectibles sold at auction which includes tissue used by Scarlett Johansson, Britney Spears' used chewing gum and Elvis Presley's hair.