Heidi Markow from Pennsylvania purchased the drawing after deciding she 'wanted it' - without realizing it could be by a legendary impressionist painter.

Markow bought the painting for $12, and when she got it home, she noticed a faint signature on the drawing that resembled Renoir’s. There are other clues as well, including a stamp on the back of the drawing that suggests it brought to the U.S. by a high-end importer and sold to a notable art collector.