A fine pair of blue and white 'Lanca' character cups marks and period of Yongzheng

after a Chenghua prototype, each of delicately potted wide shape with steep well-rounded sides, painted around the exterior with six lanca characters, each supported on a lotus bloom, between double and single line borders at the rim and foot respectively, the base with a six-character mark in underglaze-blue within a double square

Sotheby's Hong Kong, 3rd May 1994, lot 167.