Portrait Of 4th Earl Of Chesterfield ( 1694-1773 ) Jean Baptiste van Loo (1684-1745)

The picture has something of this: portrait, people, man, outerwear, jacket, wear, music, facial hair, lid, writer, mustache, coat, museum, model, fashion, musician.
Perhaps it’s a close up of a painting of a man with a white hair and a blue sash around his neck, wearing a gray jacket and white wig.