Christie's will be selling this massive fossilized egg in London on April 24. It measures a whopping 12 inches long and nine inches in diameter; that's roughly 100 times the average size of a chicken's egg.
The pre-17th century egg comes from the now-extinct Madagascar Elephant Bird, which was the largest bird to ever live and measured 11 feet in height.
The world-famous
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REUTERS/Suzanne Plunkett