In 2010, an American scrap-metal dealer visited an antique stall somewhere in the United States and purchased a golden egg sitting on a three-legged stand. The egg was adorned with diamonds and sapphires, and it opened to reveal a clock. Intending to sell the object to a buyer who would melt it down for its component metals, the dealer purchased this egg-clock for $13,302. He then had trouble selling it, as potential buyers deemed it overpriced.

The dealer had valued it incorrectly—but not the way he originally thought. In 2014, the man—who remains anonymous—discovered that his little golden objet d’art was one of the 50 exquisitely bespoke Fabergé Easter eggs created for imperial Russia’s royal Romanov family. Its value? An estimated $33 million.

The Romanovs’ extravagant royal Easter egg tradition began with Czar Alexander III in 1885. Alexander was then in the fifth year of his reign, having succeeded his father, Alexander II, who had been killed by bomb-wielding assassins. In 1885, Alexander sought an Easter gift to surprise and delight his wife Maria Feodorovna, who had spent her early years as a Danish princess before leaving Copenhagen to marry him and become a Russian empress. He turned to Peter Carl Fabergé, a master goldsmith who had taken over his father’s House of Fabergé jewelry business in 1882.