TIBET, early 20th century Thangka, tempera on canvas depicting the wheel of karmic existence (bhavacakra or samsara-cakra) held in the jaws and claws of the blue-skinned Yama on a black background, the cartouche in the upper left-hand corner remaining empty, framed under glass H. 55.5 cm- W.45 cm (as seen) Wear and loss of pigment