Rembrandt Harmensz. van Rijn – Borstbeeld van een lachende jonge man, 1629-1630 Rijksmuseum: part 3

The picture has something of this: people, portrait, wear, man, facial expression, facial hair, leader, mustache, side view, writer, elderly, confidence, politician, outerwear, scientist.
Perhaps it’s a close up of a painting of a man in a black shirt with a smile on his face and a chain around his neck and a necklace.