Portrait of Alexei Tsiprian (Alexei Fedorovich) Rokosovsky Vladimir Borovikovsky (1757-1825)

The picture has something of this: portrait, people, man, leader, facial hair, mustache, jacket, wear, cravat, vest, writer, scientist, outerwear, poetry.
Perhaps it’s a close up of a painting of a man wearing a red vest and a white shirt with a red sash around his neck and a black background.