Prompt
                                        
                                            Generate a realistic portrait of Sir Rowland Hill, a British person, in a formal 19th-century attire, possibly with a postal uniform or a suit, sitting with a postal reform-related prop, such as a postal scale or a Penny Black stamp, in a dignified and serious expression, reflecting his influential role in introducing the postage stamp and reforming the postal system, in a style reminiscent of Victorian-era photography.