The three circular ashtrays of carved nephrite, each signed Cartier, French assay and maker's marks, stacking on a square base of polished onyx with coral posts topped with cabochon sapphires, overall dimensions approximately 88 x 89 x 60mm, French assay and maker's marks. 

Ashtrays each signed Cartier, Made in France to handles. Ashtray handles and top and base to each post on base stamped with French assay marks for silver and French maker's mark M.C with cog, for Maurice Couët. Onyx black, opaque, some extremely minor chips to edges. Coral orangey pink, opaque, with typical colour mottling and granular structure visible under magnification, some age cracks and areas of discolouration. Sapphires light blue, transparent, with typical inclusions visible to the naked eye, some surface-reaching. Nephrite deep green, translucent to opaque, with typical colour mottling and granular structure visible to the naked eye, some fissures surface-reaching, some extremely minor chips to edges and areas of wear around screws attaching handles. Metal with significant tarnish and discolouration. Some areas of glue residue around handles. Ashtrays each approximately 88 x 61 x 13mm including handles, base approximately 88 x 89 x 60mm including posts. Gross weight approximately 310 grams. Very light scratches to surfaces commensurate with age and occasional use, overall in good condition.
"In response to your inquiry, we are pleased to provide you with a general report of the condition of the property described above. Please note that colour, clarity and weight of gemstones are statements of opinion only and not statements of fact by Sotheby's. We do not guarantee, and are not responsible for any certificate from a gemological laboratory that may accompany the property. We do not guarantee that watches are in working order. 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 refer to any Important Notices regarding this sale, which are printed in the Sale Catalogue, in particular to the Notice regarding the treatment and condition of gemstones.
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."

Cf.: Judy Rudoe, Cartier: 1900-1939, British Museum Press, London, 1997, pg. 252 no. 194, for a similar ashtray set in agate, jadeite, onyx and coral, circa 1923.