Cited in Chen and Pei 429, 1.43 n. 1 (second n. 1). Book of Wei: "置名號侯爵十八級，關中侯爵十七級，皆金印紫綬；又置關內外侯十六級，銅印龜紐墨綬；五大夫十五級，銅印環紐，亦墨綬，皆不食租，與舊列侯關內侯凡六等。" Cited in Chen...