A fine Royal gilt-brass mounted steel lock and key Empire, early 19th century

the lockplate with fret brass 'M.C.' cypher, the key with finely chisselled bow and finely worked bit in the form of the Royal and Military Order of Saint Louis together with a cased set of folding keys the drum with pierced 'M.C.' cypher and a pair of silver keys on a chain with a fob in the form of conjoined cartouches engraved with the coat of arms of the Duchesse de Berry (3)

Generally in good original condition, the movement shooting three bolts and extra bolt for the door handle and a deadlock sliding bolt, the mechanism itself not inspected but apparently in good working order. The steel with some stains and oxidation. The ormolu bronzes of exquisite quality.
"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."

It is highly likely that the finely engraved silver keys that form a part of this lot were presented to Marie-Caroline, Duchesse de Berry, on the occasion of her presence at the first Carrousel of Saumur, a traditional cavalry show, on June 20^th 1828. They are inscribed with the words "grateful loyalty" and were given to her by Morant, the commander of the Château de Saumur.