Sherd: Rectangular Fragment from the Side of a Cylindrical 'Zun'-Shaped Censer with Horizontal Ribs

Celadon ware: light gray stoneware body with bluish celadon glaze. Possibly from Henan or Shaanxi province

Longquan celadon ware: pale gray stoneware with lustrous, lightly crackled, transparent, bluish green celadon glaze. From the Longquan kilns in Zhejiang province

Guan ware: dark gray stoneware with lightly crackled, light grayish blue glaze. From the guan kilns near Hangzhou, Zhejiang province

Possibly Ru ware: light gray stoneware body with bluish celadon glaze. Possibly from the Ru kilns, Henan province

Longquan celadon ware: molded, pale gray stoneware with lightly crackled, transparent, bluish green celadon glaze. From the Longquan kilns in Zhejiang province

Guan ware: dark gray stoneware with lightly crackled, light grayish blue glaze. From the guan kilns near Hangzhou, Zhejiang province.

Ru ware: light gray stoneware body with pale bluish celadon glaze, the glaze with white to buff cloudiness due either to under firing or to burial (in the waste heap at the kiln site). From the Ru kilns, Henan province

Guan ware: molded dark gray stoneware with lightly crackled, light grayish blue glaze on the interior and with misfired (i.e. bubbled/cratered) light grayish blue glaze on the exterior. From the guan kilns near Hangzhou, Zhejiang province

Guan ware: dark gray stoneware body with a lightly crackled, bluish green celadon glaze. From the Guan kilns near Hangzhou, Zhejiang province

Longquan celadon ware: pale gray stoneware with matte-surfaced, bluish green celadon glaze. From the Longquan kilns in Zhejiang province

Ru ware: light gray stoneware body with pale bluish celadon glaze, the glaze with white to buff cloudiness due either to under firing or to burial (in the waste heap at the kiln site). From the Ru kilns, Henan province

Ru ware: light gray stoneware body with pale bluish celadon glaze. From the Ru kilns, Henan province