A PAIR OF DARK GREEN JADE COLLARED DISCS, BI, LATE SHANG DYNASTYChina, c. 1200-1050 BC. Of circular form, the central aperture carved with a rounded rim projecting from both sides of the flat disc. The dark green stone covered in opaque white calcification. (2)Provenance: Paolo Bertuzzi (1943-2022) was a fashion stylist from Bologna, Italy. He was the son of Enrichetta Bertuzzi, founder of Hettabretz, a noted Italian fashionpany with customers such as the Rothschild family, Audrey Hepburn, and Elizabeth Taylor. Paolo Bertuzzi later took over his mother’s business and designed exclusive pieces, some of which were exhibited in the Costume Institute of the Metropolitan Museum in New York, USA. He was also an avid collector of antiques for more than 60 years. His collection includes both archaic and contemporary art, and he edited two important books about Asian art, Goa Made - An Archaeological Discovery, about a large-scale archaeological project carried out with the Italian and Indonesian governments, and Majapahit, Masterpieces from a Forgotten Kingdom.Condition: Good condition with old wear, signs of weathering and erosion, white calcification overall, and small chips to the rims which have smoothened over time. The stones with natural fissures.Weight: 42.4 g and 40 gDimensions: Diameter 10.6 cm and 10.9 cmLiteratureparison:Compare a closely related jade bi disk with collar, dated to the late Shang dynasty, 1200-1050 BC, in the British Museum, registration number 1937,0416.252.Auction resultparison:Type: Closely relatedAuction: Sotheby’s New York, 18 March 2014, lot 133Estimate: USD 20,000 or approx.EUR 24,000 converted and adjusted for inflation at the time of writingDescription: A jade collared disc (bi), Shang dynastyExpert remark:pare the closely related form with a similar rounded collar. Note the slightly larger size (16 cm) and different color.Auction resultparison:Type: Closely relatedAuction: Sotheby’s New York, 23 September 2020, lot 573Price: USD 15,120 or approx.EUR 17,000 converted and adjusted for inflation at the time of writingDescription: A jade disc, Shang dynastyExpert remark:pare the closely related form, collar, and size (10.7 cm). Note the different color.商末一對玉璧中國，公元前1200-1050 年。扁圓，中心孔刻有圓形邊緣。深綠色的石料覆蓋著不透明的白色鈣化物。