Light green with areas of altered creamy white. In the form of a low square block penetrated and hollowed by a thin tube touching its sides and projecting slightly at either end ; the sides of the square are rather convex and the corners are bevelled above and below ; the perforation of the cylinder narrows towards the centre and is smoothly finished. On each face an all-over pattern of neat C or S-scrolls in random arrabgement relieved on a sunken ground is enclosed within the narrow bevelled border.
Professor Teisuke Toda, Institute of Oriental Culture, University of Tokyo: not a genuine work.
James Watt opinion 11/6/87: Eastern Zhou archaism, or later
A 'cong' is a jade tube that is square on the outside with a round perforation in the middle. An ancient Chinese text entitled ' Zhouli' ('Rituals of Zho'u) describes the 'cong' as a ceremonial object to sacrifice to Earth. Archaeology has shown, however, that a large number of 'cong' were made at least a thousand years before the 'Zhouli' was written. 'Cong' that were made in the Zhou dynasty, like this example, are few and far between, and are usually small in size.