A Qing Dynasty, Xuantong Mark and Period Pair of Wine Cups with a Unique Studio Hallmark SEACS2022-06-01T17:12:00+08:00 An unusual base mark leads a collector to a pleasant discovery. A Qing Dynasty, Xuantong Mark and Period Pair of Wine Cups with a Unique Studio HallmarkSEACS2022-06-01T17:12:00+08:00