The Youth Painting is treasure that can be obtained in Sly Cooper: Age of Thieves in the episode In the Air Tonight. It is worth 278 coins and the time needed to reach the safehouse is forty-four seconds.
"Back when Otto's father was still alive, he had painted a picture of Otto with his mother when he was a three-year-old boy. Arguably his father's finest work, Otto has cherished this painting for many years after he found it some time ago. Whoever took this painting from him had a lot of nerve to do so..."
It is located in the middle of a mine field that can be teleported across. Only Sly in his Wizard Costume can reach this treasure.