Which company was known for creating these gold eggs?
A Fabergé egg is a jewelled egg created by the House of Fabergé, in St. Petersburg, Imperial Russia. Possibly as many as 69 were created, of which 57 survive today.
Virtually all were manufactured under the supervision of Peter Carl Fabergé between 1885 and 1917, the most famous being the 52 "Imperial" eggs, 46 of which survive, made for the Russian Tsars Alexander III and Nicholas II as Easter gifts for their wives and mothers.
The first Fabergé egg was crafted for Tsar Alexander III, who had decided to give his wife, the Empress Maria Feodorovna, an Easter egg in 1885, possibly to celebrate their 20th anniversary. It is crafted from a foundation of gold while Its opaque white enameled "shell" opens to reveal a matte yellow-gold yolk. This, in turn, opens to reveal a multicoloured gold hen that also opens. The hen contained a minute diamond replica of the imperial crown from which a small ruby pendant was suspended, but these last two elements have been lost.
Eggs were made each year except 1904 and 1905, during the Russo-Japanese War.
Following the revolution and the nationalization of the Fabergé workshop in St. Petersburg by the Bolsheviks in 1918, the Fabergé family left Russia. The Fabergé trademark has since been sold several times and several companies have retailed egg-related merchandise using the Fabergé name.