Buddisky Lama at a party in a Monastery Pemionchi. Sikkim. 1875 Vasily Vereshchagin (1842-1904)

The picture has something of this: people, god, veil, ancient, decoration, wear, cape, museum, saint, sword, sculpture, crown.
Perhaps it’s a painting of a man in a costume with a demon mask on his head and a demon.