A cobalt blue glass bowl, 18th-19th century. Estimate US$ 1,200 - 2,000 (€1,100 - 1,800). Photo Bonhams.

Formed with a wide, deep well and raised on a tall upright foot with a shallow recess across the base, the translucent matrix of deep blue color (surface abrasions). 6in (15.3cm) diameter

Property from the Xanadu Gallery, San Francisco 

Bonhams. ASIAN DECORATIVE ARTS, 11 Dec 2015 10:00 PST - SAN FRANCISCO