A REDDISH-BROWN JADE COLLARED DISCNeolithic PeriodThe flattened disc carved with a large central aperture with lipped rim, the stone of a brownish-red tone.10.5cm (4in) diam.Provenance: 新石器時代 玉鐲形器Provenance:Acquire in Hong Kong in 1989來源：1989年入藏於香港Compare to a greyish-black circular jade loop with flange of the late Neolithic Period (11.5cm diam.) in the National Palace Museum collection illustrated in90 Years of Collecting: A Selection of Fine Works of Art Acquired by the National Palace Museum, Taipei, 2015, pp.36-37.台北故宮博物院藏一件新石器時代晚期墨灰色凸緣環（外徑11.5公分）可資比較，見《天保九如：九十年來新增文物選粹》，台北，2015年，頁36-37。