The egg in gold and diamonds on a claw-foot stand features pink enamel panels painted in cameo style with miniature allegorical scenes of the arts and sciences based on French artist François Boucher.

It is a true chef d'oeuvre in pink enamel and inside a porte-chaise carried by two negroes with Empress Catherine in it wearing a little crown on her head.

You wind it up and then the negroes walk: it is an unbelievable beautiful and superbly fine piece of work.

Fabergé is the greatest genius of our time, I also told him: Vous êtes un génie incomparable.The egg's surprise, also described as "a mechanical sedan chair, carried by two blackamoors, with Catherine the Great seated inside" has since been lost.

[2] It forms part of the Marjorie Merriweather Post collection at Hillwood Museum in Washington, D.C.[2] Its Easter 1914 counterpart (presented to the Empress Alexandra Feodorovna) is the Mosaic Egg, now in the Royal Collection in London.