A guilloche enamelled and gem set gold mounted  nephrite box by Carl Fabergé, St. Petersburg, circa 1900. Photo courtesy Wartsky

Rectangular, the gold hinges and catch enamelled translucent pale yellow over a dappled guillochage and set with cabochon rubies, in its original silk and velvet lined fitted hollywood case, the lid stain stamped 'St. Petersburg, Moscow, Odessa' beneath the Imperial warrant. Signed Fabergé in Cyrillic, inventory number 10846.7cm by 3cm by 2cm. Price on application

Wartsky. http://www.wartski.com/