http://www.tibetology.ac.cn/2023-11/24/content_42609192.htm “朵儿只唱”图记是一枚明代象牙图章,方形印面,配以狮钮,高6.1厘米、边长5.2厘米,原收藏于西藏罗布林卡,现收藏于西藏博物馆 The "Duo'er Zhichang" seal is an ivory seal from the Ming Dynasty. It has a square seal face and a lion button. It is 6.1 cm high and 5.2 cm long. It was originally collected in the Norbulingka in Tibet and is now collected in the Tibet Museum.
http://www.xzmuseum.cn/2022/01/29/4c422b5112c04aacae89e2eda9d7af3c.html 有藏文史料里记载,“明朝于万历十五年(1587年),遣使臣在内蒙,敕封索南嘉措为‘朵尔只唱’,并邀请他入京面圣。” The Tibetan historical materials recorded that "In the 15th year of the Wanli reign of the Ming Dynasty (1587), the Ming Dynasty sent envoys to Inner Mongolia to confer the title of 'Dorjichang' on Sonam Gyatso and invited him to Beijing to meet the emperor."