Extraordinary and rare white jade bell or guanta with dorje or vajra of imperial manufacture, both with Qianlong mark and the Period China, Qing Dynasty, Qianlong Period (1736-1795) h cm 17,2, in a black skin cover, dorje cm 13 Such an example of bell and dorje are displayed at the Emperors Palace in Beijing. Reference. The Complete Collection of Treasures of the Palace Museum, Jadeware, (III), Volume 42, pages 134-135, no. 112. Another exemplar is preserved in the Potala Palace Collection in Lhasa and published on “Treasures from Snow Mountains Gems of Tibetan Cultural Relics”, Chien Xiejun, page 131 n. 51