Achaemenid Chalcedony Stamp Seal with Ahura Mazda. Circa 5th century B.C. Fragment of a conoid seal; Bivar notes in his summary: 'White chalcedony conoid with the reverse end broken off, leaving disk-shaped bezel. Fifth century B.C. This shape is perhaps typical of Babylonia. Above, Ahuramazda symbol r., with a human bust crowned..'; accompanied by a museum-quality impression. 14.3 grams, 25 mm (1 in.). with Christie's, London, 21 April 1999, no.12. Accompanied by a copy of a scholarly note typed and signed by A.D.H. (David) Bivar. This lot has been checked against the Interpol Database of stolen works of art and is accompanied by a search certificate number no.12541-230316.