This buddha, probably Shakyamuni, is seated on a tall lotus base typical of the Zanabazar school, his right hand doing the teaching gesture, the other held in meditation.
Amitabha holds a begging bowl in both hands over his lap.
Apart from a gesture specific to him, Vairocana may be ‘turning the wheel of the law’ with his hands. The above has cold gold on his face, painted facial features and blue pigment on his hair.
The broad hem of his garment is decorated with a stippled lotus motif.
17th century, Mongolia, Bhaisajyaguru, gilt bronze, Zanabazar school, private collection, photo by Polyauction https://www.polyauction.com.hk.The medicine buddha is easily identified by the arura fruit in his right hand and the medicine jar or bowl in his left hand, both kept in place by several raised fingers.
Ratnasambhava, his left hand in the meditation gesture, the other holding a gem now missing.