Rare and important gem set and diamond bangle, Cartier, early 1920s

The black lacquered bangle highlighted with graduated circular-cut diamonds, the sides decorated with circular- and single-cut diamonds and buff-top emeralds, the terminals each decorated with a button shaped pearl, buff-top onyx and a black enamel frame, indistinctly signed, numbered, French assay and partial maker's marks, illustrated twice, from the front and profile.

Accompanied by SSEF report no. 76243, stating that one pearl measuring 14.90 x 15.25 x 8.30 mm, was found to be natural, saltwater, and that due to the setting, the other pearl could not be tested. Partial French maker's mark, numbered C6890. French assay marks for platinum. Pearls of cream body colour, with rosé and green overtones, medium to good lustre, growth marks, scratches and minor nacre loss; for further information please refer to the SSEF report. Emeralds well matched in colour. Onyx in good condition. Enamel with a few scratches and minor chips. Diamonds estimated to weigh a total of approximately 9.00 - 11.00 carat, on average G-I colour, VS-SI clarity. Signs of normal wear to the metal, scratches consistent with use. In good condition. Gross weight approximately 65 grams.
"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 and to the Notice regarding import of Burmese jadeite and rubies into the US.
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."