A COPPER-RED-GLAZED DEEP BOWL UNDERGLAZE-BLUE KANGXI MARK WITHIN A DOUBLE CIRCLE AND OF THE PERIOD (1662-1722)A Qianlong copper-red-glazed bowl was illustrated in an article by John Ayers,1999, pp150, lot 256 in 《CHINESE CERAMICS IN THE BAUR COLLECTION》From a British private collection 15.5 cm.