An assistant poses for a photograph with a Faberge egg during a photo-call at  antique dealer Wartski, in central London on April 7. The $20 million egg, hailing from the court of imperial Russia, was bought in a US junk market by a scrap metal dealer, before it was acquired by Wartski for an unidentified private collector. It will be on display at Wartski's in London for four days in April. Reuters/Olivia Harris