A Yaozhou celadon bowl, Song dynasty. Photo Bonhams.

Thinly molded with a slightly flared rim to the body of inverted bell form carved on the exterior walls with overlapping bands of lotus petals, the pale olive green glaze applied to all surfaces except the foot pad but burnt a soft cinnamon brown where thinly applied to the deeply recessed base. 5 1/2in (14cm) diameter. Estimate US$ 2,000 - 3,000 (€1,500 - 2,200). Unsold

Bonhams. ASIAN DECORATIVE ARTS. San Francisco. 18 Dec 2013 -www.bonhams.com