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