Tracks the performance of an artwork against its maximum and minimum estimate across time. For example a realized price above the maximum estimate indicates overperformance of the artwork
ink and colour on gold flecked paper, one side with a landscape, spring along the willow bank, by qiu zhu, signed by the artist: du'ning neishi, [painting this] for tingyun guan zhu (master of the tingyun pavilion, wen zhengming)