part of a ritual bone-apron

human(?) bone
Tibet/Nepal, ca. 16th cent.
high: 16,5 cm.

A beautiful, large and very detailed part of a ritual bone-apron (ru-gièn).
At the top is Sadakshari Avalokiteshvara, with under him Garuda and two Nagarajas, with left and right two apsaras; then the Five Tathagatas. The central deity is Chakrasamvara yab-yum, with under him, again, the Five Tathagatas. At the bottom, very sweet, a pair of Nagas