Wanhu Office Yuan Dynasty,copper seal with a straight knob, 9.7 cm high, each side: 8.2 cm

The seal was inscribed with "Seal of vBri-gung Wanhu Office" while the inscriptions on its back read: "Seal o vBri-gung Wanhu Office" (right) and "Made by the Protocol Department in the first month of the eighteenth year of Hongwu" (left). One side is inscribed with "Lan No. 70". VBri-gung was also called vBri-gung-ba in History of the Ming Dynasty, whose sphere of influence was in the present vBri-gung at the Mal-gro-gung-dkar County in east of Lhasa. So, historians also call it vBri-gung. In the thirteenth century, vBri-gung possessed powerful influence and beame one of the thirteen Tibetan Wanhus of the Yuan Dynasty. The Ming Dynasty, following the system implemented by the Yuan Dynasty, maintained Wanhu Office. VBri-gung Wanhu Office was established in the eighteenth year of Hongwu (1385). It was stipulated that the head of vBri-gung Wanhu Office be equal to th fourth-class official. The extant seal of vBri-gung Wanhu Office was bestowed in the year when it was set up. after its establishment. Living Buddhas of the vBri-gung Monastery also made direct contact with the Ming Dynasty. In the twenty-fourth year of Hongwu (1391), "vBri-gung Lama Rin-po-che Chos-kyi-rgyal-po sent his envoys Bayan-ston-pa and others to present silver seals bestowed upon them in the Yuan Dynasty" so as to please the Ming Emperor. And then, he dispatched his envoys to pay tributes several times, which strengthened the ties with the Ming Dynasty. Soon, he was conferred upon the title of State Tutor.