Trans-Siberian Railway - Fabergé egg - was created in 1900.
At the following link, you can find a picture and info about this egg, on wikipedia, you can also get info about the who/what/where/when for this egg. It was ordered by Tszar Nicholas II, who was awarded the Order of St. George, and who gave it to his mother, the Dowager Empress Maria Feodorovna Egg info: http://www.treasuresofimperialrussia.com/e_chap11_srgeorge.html Wiki: http://en.wikipedia.org/wiki/Order_of_St._George_(Faberg%C3%A9_egg)
The value of a Fabergé egg, particularly a unicorn-themed one, can vary significantly based on its provenance, condition, and the market demand. Authentic Fabergé eggs are known to fetch millions at auctions, with some selling for upwards of $20 million. However, as of my last knowledge update in October 2023, no specific "unicorn Fabergé egg" is widely recognized, so its worth would depend on the individual egg's characteristics and historical significance.
The Odd Egg was created in 2008.
Ovson Egg was created in 1919.
The Angel's Egg was created in 2006.
Egg Banking was created in 1998.
The Killing of an Egg was created in 1977.
Egg Beaters was created in 1972.
Egg - film - was created in 2007.
Egg Venture was created in 1997.
The Crystal Egg was created in 1897.
Nécessaire Egg was created in 1889.