A rare white-glazed 'chrysanthemum' dish mark and period of Yongzheng

the low rounded sides delicately moulded in the form of chrysanthemum petals with twenty-four flutes curving upwards to a lobed rim, all supported on a circular foot-ring, applied overall with a lustrous white glaze, the base inscribed with the six-character mark within a double circle  

Sotheby's Hong Kong, 7th May 2002, lot 503.

There is a crack to the base on the upper right-hand side of the mark, but does not go through the body. There are two tiny ironspots to the interior, each approx 0.1-0.2cm. Otherwise in generally good condition.
"In response to your inquiry, we are pleased to provide you with a general report of the condition of the property described above. Since we are not professional conservators or restorers, we urge you to consult with a restorer or conservator of your choice who will be better able to provide a detailed, professional report. Prospective buyers should inspect each lot to satisfy themselves as to condition and must understand that any statement made by Sotheby's is merely a subjective, qualified opinion. Prospective buyers should also refer to any Important Notices regarding this sale, which are printed in the Sale Catalogue.
NOTWITHSTANDING THIS REPORT OR ANY DISCUSSIONS CONCERNING A LOT, ALL LOTS ARE OFFERED AND SOLD AS IS" IN ACCORDANCE WITH THE CONDITIONS OF BUSINESS PRINTED IN THE SALE CATALOGUE."

A similar dish was sold in these rooms, 30th April 1991, lot 84.  A set of related Yongzheng chrysanthemum dishes in twelve colours were included in the exhibition China. The Three Emperors, Royal Academy of Arts, London, 2005, cat.no. 172, where Regina Krahl notes that 'on the twenty-seventh day of the twelfth month of the year 1733 the Yongzheng Emperor ordered Nian Xiyao, then supervisor of the imperial kilns at Jingdezhen in Jiangxi province, to make twelve differently coloured chrysanthemum-shaped dishes. Nian is recorded to have delivered forty pieces of each colour' (ibid., p. 431).