Six-tier tube (<em>cong</em> 琮) with masks, probably recut

Tall, squared, hollow cylinder of the type ts’ung [cong] 琮; projecting collar at top and base; mottled rich browns, black, and yellowish tan; decoration: channeled and incised, vertical grooves on sides, horizontal notches, ridges, and circles at corners. (Slight surface defects.)