Allan Pinkerton was tough enough to start his own railroad detective & security service known proudly as the Pinkertons. They offered a little bit of order, without so much law to the railroads as they expanded out toward the once wild west of the late 19th century. While things have changed, and there are some dark chapters in the organization, the Pinkertons still exist in some form to this day and you can emulate them with this authentic looking Pinkerton Detective Badge.
If you ask any professional costume designer or passionate cosplayer, they will tell you that the right accessories are what you need to take your ordinary-looking costume to an extraordinary level. This is especially true for someone like a Pinkerton detective, as without a Pinkerton Detective Badge, you would just end up looking like a guy in an outdated cheap suit.