Celadon-glazed jar and cover - estimate £100,000-150,000 at Sothbey's on November 3.

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Both were early members of the Oriental Ceramic Society.

This small celadon-glazed jar and cover, typical of the revivalist pieces made in the pioneering years of the Yongzheng (1722-35) period, has a provenance to the International Exhibition of Chinese Art at the Royal Academy in 1935-36.

Estimate £100,000-150,000.