A Chinese pale celadon jade bi disc, Ming or ... Lot n° 467

A Chinese pale celadon jade bi disc, Ming or earlier -- Dia.: 11,5 cm (the ring) H.: 20,5 cm (stand incl.)Thickness: 5 mm  The stand of later manufacture.  Provenance: A Belgian private collection.  Condition: (UV-checked) (Following the orientation as on the first image presented) - (front) A superficial 1,5 mm chip on the outer rim just before 1 o'clock. - A natural 2,5 cm tension line in the stone between 3 and 4 o'clock. - A natural 8 mm tension line in the stone just before 7 o'clock.- (back) A 3 mm section of discoloration at ca. 1 o'clock.- The tension line visible on the front at just before 7 o'clock also visible on the back at ca. 5 o'clock.- A superficial 2-3 mm rim chip just next to it.- A few very small scratches and a 3 mm pit between 8 and 9 o'clock.- The inner rim with two superficial 1 and 3 mm chips at ca. 3 and ca. 9 o'clock.- The wooden stand with a few losses. -- Titre en français: Un disque bi en jade céladon pâle, Ming ou avant