The present chairs are distinguished by the attractively figured grain on the backsplat and the precise carving of the ruyi-form medallion. A single huanghuali horseshoe-back armchair, also with exquisitely grained backsplat and finely carved medallion, formerly in the collection of Robert H. Ellsworth, was sold Christie's New York, 18 March 2015, lot 139.
For a discussion of this chair shape, see R.H. Ellsworth, Chinese Furniture: Hardwood Examples of the Ming and Early Ch'ing Dynasty, New York, 1971, pp. 86-87, and Wang Shixiang, Connoisseurship of Chinese Furniture: Ming and Early Qing Dynasties, Hong Kong, 1990, pp. 43-45.