the elongated rectangular wood case and well with swollen silver parcel-gilt terminals, edges and double-hinged well, carved with foliate motifs, stamped with tughra and assay marks, with suspension chain

In generally good condition, some wear and scratches to wood case, some of metal string around well slightly loose and oxidised, with dirt encrustations within corners, remnants of adhesive near edge of well signal that it was restored at a later stage, the chain for hanging probably later addition, 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."

inscriptions

Possibly, the tughra of Mahmud II (r.1808-39 AD)