A WHITE JADE 'CHILONG AND BI' SERVANTS BELL, LATE QING China, 19th - early 20th century. The translucent jade is probably form the late Ming dynasty and of white color, mottled with areas of grey and scattered black specks, showing a bi disc carved and incised with two openwork chilong. Provenance: Nagatani Inc., Chicago, 1973. Robert 'Bob' Mayer and his wife, Beatrice 'Buddy' Cummings Mayer, acquired from the above. The Mayers were hugely influential figures in the development of contemporary art in the United States. As a founding trustee and treasurer of the board, Bob was a leading force in the success of the Museum of Contemporary Art (MCA) in Chicago in its formative years. Condition: Traces of wear and usage, losses both to jade and mounting. Weight: 103.4 g Dimensions: Length 10.3 cm The fitting is made of embossed, chiseled and gilt copper, depicting a flower band with buds, vines and leaves, the push button for the bell is made from a fine coral cabochon, still intact, all fitted to a wood base with black felt covering its bottom. 鑲白玉螭龍玉璧僕人鈡，晚清 中國，十九至二十世紀。半透明的白玉可能是明末清初，表面局部呈灰色並散佈著黑色斑款，透雕兩條螭龍和玉璧。 來源：1973年芝加哥Nagatani Inc. 藝廊。Robert 'Bob' Mayer及他的妻子 Beatrice 'Buddy' Cummings Mayer收藏。Mayer一家在美國當代藝術的發展中起到了很大的作用。作為董事會的創始受託人和財務主管，Bob在芝加哥當代藝術博物館（MCA）成長初期，是其成功的領導者。 品相：使用痕跡，白玉和鑲框缺損嚴重。 重量：103.4 克 尺寸：長10.3 厘米