在中国秦汉瓦当中 ,有一种十分珍贵又争议颇大的“十二字瓦当” ,其字文为“唯天降灵 ,延元万年 ,天下康宁”。长期以来 ,对于这种瓦当的制作年代 ,众说纷纭。如 :“秦阿房宫出土的十二字瓦当”① ;“前人以为此为秦瓦 ,实为汉物 ,西安汉城遗址出土”② ;此瓦在秦阿房宫采集最 Among the Qin and Han dynasties in China, there is a very precious and controversial “Twelve-Word Vatan,” whose inscription reads “Only Heavenly Spirit, Yan Yuan, and Corning.” For a long time, there are different opinions on the production date of this tile. Such as: “Qin A palace unearthed in the word watts” ①; “predecessors think it is Qin tile, it is a real thing, unearthed in Xi’an, Seoul site” ②;