An extremely rare coral-red backed bowl, China, Yongzheng six-character mark in underglaze blue within a circle and of the period. Photo Nagel

Thinly potted with rounded sides rising from a small ring foot, the exterior covered with a deep reddish-orange enamel. D. 9,3 cm. Estimate 40 000 / 60 000 €

Nagel Auctions. "Asian Art". May 10th 2012 http://www.auction.de/