You have a wonderful treasure and I bet it is going to look really great on your wall.
The Hiawatha emblem is probably the best looking of all Railroad symbols.
Unlike the PA, UP, NYC. ect, ect it is a piece of Modernism art that is going to to a appeal to a very wide variety of people.
Have you given any thought to the type of framing you are going to use? A black and white photo of a train station behind it would bring it out and add some subject depth to it.
In any case it is a beautiful thing and I'm sure it will look great no matter what you do with it.