THEODORE ATKINSON, 1757-58, OIL ON CANVAS John Singleton Copley (1738-1815)

The picture has something of this: people, portrait, person, event, man, model, sword, vintage, fashion, necklace, jewelry, famous, dress, jacket, retro.
Perhaps it’s a painting of a man in a red coat and white shirt with a hat on his head and a cane in one hand.