Rembrandt Harmensz. van Rijn – Portrait of an Old Man in Red Hermitage ~ part 14 (Hi Resolution images)

The picture has something of this: people, portrait, elderly, man, facial hair, mustache, wear, scientist, writer, Renaissance, painter, poetry, music, poet.
Perhaps it’s a close up of a painting of a man with a white beard and wearing a red shirt and sitting in a chair with his hand on his knee.