1991年10月,云南省大理白族自治州文物管理所在宾川县境内征集到一件明代铜权。铜权保存较完好,环纽,中空。权体呈上小下大的六面体,近底部束缩,形成一周凹槽。权身铸阳文,阳刻,从正面开始,六面从右至左依次直书:“建文(?)二年(?)大理府(?)造□。八号(?)大字”。通高4.2、纽高0.7、穿径0.4厘米(图一)。 October 1991, Yunnan Dali Bai Autonomous Prefecture Cultural Relics Management Binchuan County, where the collection of a Ming copper rights. Copper rights better preserved, Central New Zealand, hollow. Right body showed small big hexahedron, near the bottom of the bundle, forming a week of grooves. Right body cast Yang Wen, Yang carved, starting from the front, from right to left six straight book: "Jianwen (?) Two years (?) Dali House? Tong 4.2, New York 0.7, diameter 0.4 cm (Figure 1).