Tags of any type are such a cool thing to find, they tell a story & are usually one of a kind especially when they have a number. Yours is in a great condition, congrats on a terrific find.
Really nice! One of the best parts of detecting is learning little bits of history in response to finding relics like that one.
I was looking at the Wikipedia page for the Northern Pacific Railway and saw that they were using that Ying-Yang design pretty much from the start at the turn of the century.
There were some very attractive advertising posters featuring the Northern Pacific Yellowstone Park line. You could get a reproduction and have it framed with a custom mat with the luggage tag.