A good Chinese underglaze blue plate, Kangxi, with unusual mark

A good Chinese plate with panel-moulded rim, decorated in underglaze blue, and dating from the Kangxi period.  The centre of the plate is decorated with peony, lotus and chrysanthemum flowers, and the rim has a cracked ice design with kraak-style panels containing further flower spays.  The reverse is decorated with precious objects around the rim, and a band of flames around the foot rim.  The base has the mark Qi yu bao ding zhi zhen (precious as a treasured ding of rare jade) to the base within underglaze blue circles.  Old label to the base.  Diameter 22.5cm (8.9").

Date: Kangxi c 1700-20

Condition: this plate is in very good condition.  There is some glaze fritting to the rim, and a small and shallow glaze chip at the back of the rim.  No cracks and no restoration.