Sotheby’s in Australia has uncovered an Aboriginal painting that has been missing for a generation. It was in New York, owned by a woman who had no idea of the work’s importance or value:

A significant piece of Indigenous artwork thought to have been lost for almost 40 years has arrived back in Australia. The painting by renowned Indigenous artist Clifford Possum Tjapaltjarri has been unveiled at the Sotheby’s Auction House in Melbourne. It has been in New York since 1975, when it was given as a gift to an American woman by an Australian family.

Possum Magic as Important Artwork Returns Home (ABC Online)