Bildnis des Generalfeldmarschalls Graf von Roon Gustav Graef (1821-1895)

The picture has something of this: people, portrait, wear, man, military, leader, facial hair, lid, military uniform, administration, elderly, outfit, uniform, veil, mustache, soldier.
Perhaps it’s a painting of a man in a military uniform standing in front of a table with a book on it and a lamp on top of the table.