Cecilia Leung of Sotheby's said the bowl, which measures about 5 inches in diameter, had been purchased by the seller, whose name was not released, at a yard sale in 2007 and displayed in their living room for several years before the owner decided to have it appraised, CNN reported Wednesday.
The bowl was found to be a 1,000-year old example of Northern Song Dynasty pottery.
The object was purchased by London dealer Giuseppe Eskenazi.
Beyonce flaunts bikini body, Blue Ivy in vacation pics
Gal Gadot cast as Wonder Woman for 'Batman vs. Superman'