Beginning under Constantine X Doukas in the eleventh century, seals and coins increasingly depicted Christ enthroned. He holds a book in his left hand and blesses with his right hand, while the throne itself usually takes one of three shapes: backless, straight-backed, or lyre-backed. On coins, the Mother of God enthroned appears at about the same time, but her depiction on seals is limited to empresses, for example the seals of Anna Palaiologina, regent for John V in the fourteenth century.