Head of Vishnu is a Khmer Sandstone Sculpture created between 900 CE and 925 CE. It lives at the Musée Guimet in Paris. The image is used according to Educational Fair Use, and tagged Deities and Gods, Vishnu, Trimūrti, Sculpture and Heads. Source
This sandstone head of Vishnu was found in the Prasat, or temple at Phnom Bok — a hill northeast of the Eastern Baray (a man-made lake) in Cambodia.