Two similar mirrors of larger size (27.5 and 25.4 cm.) in the Donald H. Graham Jr. Collection are illustrated by Toru Nakano, Bronze Mirrors from Ancient China, Hong Kong, 1994, pp. 154-57, nos. 48 and 49, where the characters surrounding the knop may be translated, "[If you own this mirror], you and your family will prosper forever". The author relates the whorl motifs to whorl-ground patterns on earlier Warring States and Western Han dynasty mirrors, and notes that these types of mirrors are "the last group to follow the old mirror-making traditions which had existed since the Warring States period".