A good example of a Roman portrait painting is the Fayum Mummy Portraits. These are a series of panel paintings on wooden boards that were created in the Roman province of Egypt and were placed over the faces of mummies.
They date back to the 1st century CE and are known for their high level of realism, which was achieved through the use of encaustic wax painting techniques.
The portraits provide a fascinating glimpse into the lives of everyday people from ancient Rome and offer a unique perspective on ancient Roman society and culture.
They are now housed in various museums around the world, including the British Museum, the Louvre, and the Metropolitan Museum of Art.