My Grand parents were mountain folks, who left the mountains for Northern VA maybe in their mid to late 20's. I don't think coal mining was something my grandpa wanted to do, but I can't say for sure that is why they moved. Anyways they never really did any traveling outside of visiting places in the VA MD PA KY TN area until much later.
BUT one of my Grandpa's brothers was in the army back in WWII, it could have maybe been a gift from him?? I don't know much about him except for the fact that he was in WWII.