Mario:
What I thought I would do is to have it professionally framed with the Hiawatha orange in the center of the emblem and the appropriate red surrounding it. I would have the framer simply screw the emblem (where there are holes) into the back of the frame and have a glass cover over the face of the wall hanging.
nyc, etc., I agree, it is a real keeper. It is special to me as it was a gift from a valued employee. I will be most proud to display it in my train room. Although I have several nice train pictures on the wall, this will have a place of honor.
Art, thanks for the advice. I will leave it it's original (perfect) condition.