Portrait of Angelo Masini (1845-1926) Valentin Serov (1865-1911)

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