A silver cigarette case, Haller & Rathenau, Berlin, late 19th century

the lid enamelled and parcel gilt with crowned cipher double E within the motto of the Ernestine Order, the reverse engraved with signature Ernst, further struck 84 and with initials M.T

Excelent condition apart from surface scratches from use.
"In response to your inquiry, we are pleased to provide you with a general report of the condition of the property described above. Since we are not professional conservators or restorers, we urge you to consult with a restorer or conservator of your choice who will be better able to provide a detailed, professional report. Prospective buyers should inspect each lot to satisfy themselves as to condition and must understand that any statement made by Sotheby's is merely a subjective, qualified opinion. Prospective buyers should also refer to any Important Notices regarding this sale, which are printed in the Sale Catalogue.
NOTWITHSTANDING THIS REPORT OR ANY DISCUSSIONS CONCERNING A LOT, ALL LOTS ARE OFFERED AND SOLD AS IS" IN ACCORDANCE WITH THE CONDITIONS OF BUSINESS PRINTED IN THE SALE CATALOGUE."

This cigarette case was likely given by either Ernst I, Duke of Saxe-Altenburg (1826-1908), who was Grand Duchess Maria Pavlovna's first cousin once removed, or Ernst II, Duke of Saxe-Coburg and Gotha (1818-1893), who was her second cousin once removed.  Interestingly, in 1846, Ernst II abolished the 1816 law which forbade smoking on the streets of his duchy.

Both dukes were member of the Ernestine Order, the House Order of the Duchies of Saxony, which was co-founded on 25 December 1833 by Frederick, Duke of Saxe-Altenburg (1763-1834), Ernst I, Duke of Saxe-Coburg and Gotha (1784-1844), and Bernhard II Erich Freund, Duke of Saxe-Meiningen (1800-1882), to honour their mutual ancestor, Ernst I "The Pious", Duke of Saxe-Gotha and Altenburg (1601-1675). 

Haller & Rathenau, Court Jewellers to the King of Prussia, was a leading 19th century luxury goods firm founded in Berlin in 1842 by Joseph Haller and Benjamin Rathenau.