In this Wednesday, Nov. 28, 2012 photo, Karen Mallet stands in front of her Alexander Calder print in her Shorewood, Wis., home. Mallet bought the print for $12.34 at a Goodwill thrift store in Milwaukee. It turned out to be a lithograph by the American artist Alexander Calder worth $9,000. (AP Photo/Morry Gash)

MILWAUKEE (AP) - Holiday bargain-hunters may want to head to Goodwill. A picture that sold for around $12 at a thrift store in Milwaukee turned out to be a print by American artist Alexander Calder worth $9,000.

It is at least the fourth time in six months that valuable art has turned up at Goodwill. A spokeswoman for the charity said workers try to spot valuables and auction them off on a website, but some are missed, which is part of what makes shopping there such an adventure.

The picture sold in Milwaukee is called "Red Nose." It's an abstract image that resembles the face of an ape, all black and white except for a red nose. Its buyer, media relations specialist Karen Mallet, (mal-AY'), has no immediate plans to sell it.