镶绿松石青铜牌(夏代)。1981年在河南偃师二里头遗址出土,长14.2厘米、宽9.8厘米。 Published February 4, 2016 at 950 × 652 in 夏代玉瑗, Xia Dynasty Jade Ring, D. 9.8cm, 79.8grams ← Previous Next →