Karl von Linné (1707-1778) * Alexander Roslin (1718-1793)

The picture has something of this: people, portrait, jacket, elderly, necklace, famous, man, writer, engraving, wig, scientist, facial hair, leader, mustache, coat.
Perhaps it’s a close up of a painting of a man in a red coat with white hair and a white frizzle on his left side of his face.