Erik Brahe (1722-1756) * Gustaf Lundberg (1695-1786)

The picture has something of this: portrait, people, man, jacket, leader, necklace, wear, neckwear, menswear, cravat, writer, headshot, profile, scarf, mustache, face.
Perhaps it’s a close up of a painting of a man wearing a blue coat and a white shirt with a gold trim around his neck.