Lot 566. A fine pair of monochrome blue glazed porcelain bowls, underglaze blue Yongzheng six-character marks and period (1723-1735); D. 13,8 cm. Estimate: € 15,000 - €25,000. Result: € 13,000. Courtesy Nagel. 

Provenance: Former old European private collection, assembled prior 1990 - Private property Frankfurt.

Note: Cobalt-blue porcelains were associated with the Tiantan, Altar of Heaven, where they were used during imperial rituals. Unsurprisingly, such glazes are sometimes referred to as 'sacrificial blue' (jilan).

Fine Asian Art, Stuttgart - Part I by Nagel Auction, December 8, 2020