It's a collectable item from your Dad that's from his Dad. He thought enough to give you something that apparently is special to him. Just take a minute and think about that. You should treat it special....I sure would. I know he would appreciate that....trust me. Who knows, one day you could possibly pass it on to your son.
Have it slabbed to ensure that it is protected properly. I think it would look better encased with a flip giving the details of the item. I've had a few tickets slabbed, and I'm very pleased with the results.