Heidi Markow says charcoal work bought at local art auction ‘just stood out to me as something special’A woman in Pennsylvania has bought what is believed to be a rare Renoir charcoal drawing, potentially worth hundreds of thousands of dollars, for just $12 at a local art auction.ABC news report ed that Heidi Markow, who owns an antiques business in the state, found the item at a collector’s auction in Montgomery county in January. Continue reading... ...read more read less