Jean-Baptiste Mauzaisse – Gaspard Monge, Comte de Peluse (1746-1818) Château de Versailles

The picture has something of this: people, portrait, elderly, man, facial hair, mustache, writer, wear, leader, cravat, outerwear, scientist, engraving, jacket.
Perhaps it’s a close up of a painting of a man wearing a black coat and a white shirt with a brown tie and a black jacket with a white collar.