A Cartier elephant mystery clock sold to... [Getty Images]

Lisbon, PORTUGAL: A Cartier elephant mystery clock sold to the maharajah of Nawanagar in 1928 is displayed 14 February 2007 at the Calouste Gulbenkian foundation in Lisbon. To commemorate the 50th anniversary of the foundation, a set of 230 jewels, watches and personal objects from the Cartier Collection as well as some of Calouste Gulbenkian?s acquisitions are displayed at the Lisbon site. AFP PHOTO/ NICOLAS ASFOURI (Photo credit should read NICOLAS ASFOURI/AFP via Getty Images)

AFP NICOLAS ASFOURI