西汉  “惟汉三年，大并天下”瓦当

A tile of "National unity was achieved on the third year after the Han dynasty was founded" made during the Western Han dynasty.

直径 16.7 厘米  厚 2.9 厘米

河南新郑出土

藏于内蒙古呼和浩特市《杨鲁安藏珍馆》