A Christie's staff holds the Maria Christina Royal Devant-de-Corsage brooch during an auction preview in Geneva, Switzerland, May 8, 2015. The brooch was given as a wedding present in 1879 by King Alfonso XII of Spain to his wife the Archduchess Maria Christina of Austria. It is expected to sell between US $ 1,500,000 to 2,000,000 when it is auctioned on May 13 in Geneva. REUTERS/Denis Balibouse