Portrait of the Lieutenant of the Guards Regiment Count G.A. Bobrinsky Konstantin Makovsky (1839-1915)

The picture has something of this: people, wear, portrait, man, necklace, jewelry, royalty, medal, outfit, military uniform, leader, music, uniform, military, administration, woman, monarch.
Perhaps it’s a painting of a man in a black uniform with gold trimmings and a moustache on his face, standing in front of a brown background.