NEW YORK (Reuters) - A 9,000-year-old limestone mask, the oldest art object ever offered at Christie's, could sell for up to $600,000 when it goes under the hammer in June, the auction house said on ...

Skeleton masks and skull cups, crafted from human bones, have been uncovered by archaeologists in China, dating back 5,000 years. This remarkable find, made at the Liangzhu cultural sites, provides ...