拍品專文
Although there are some similarities to gem portraits of Socrates, in particular the small pug nose, the details of the beard differ, so too the general expression. Vollenweider describes a nearly identical portrait on an orange agate ring stone in Paris as that of a "thinker." See no. 270 in Vollenweider, Camées et intailles, Tome I, Les Portraits grecs du Cabinet des médailles, Catalogue Raisonné.