comprising a long chain composed of panels linked through two strings on the reverse, of sheet gold, each worked in repoussé with foliate motifs, surmounted by an ornament featuring Krishna dancing on a coiled serpent, set with fresh water pearls and red stones

In generally good condition, most probably missing end terminal, cord on reverse later addition, small chip to head of one of abstracted naga heads on top ornament, and missing hanging miniature pearl, break left-hand side of ornamental head with missing hook, some cleaning residue on surface, as viewed.
"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."

Originating in South India, this Jadai Nagam would have been worn by Bharatanatyam dancers (the dance of the maid-servants) along their long braid. Depicting Krishna dancing on the head of the king of snakes, Kaaliya, this piece would hold strong ceremonial connotations. 

An almost identical Jadai Nagam, with its hanging terminal still intact, is in the Barbier-Mueller Museum, Gerneva (inv. no. 2504-106), illustrated in Krishnan and Kumar 2001, pp.96-7, no.137).