A Pennsylvania woman paid $12 for artwork that could be an original piece by French impressionist Pierre-Auguste Renoir.

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.

It was a pretty routine day in January when antiques shop owner Heidi Markow attended an auction in Montgomery County and walked away with a framed charcoal nude drawing for just $12. After hours of grueling research,