I am at my wits end, cannot find any information on this, it weighs about 0.588 grams and is 1/2" across, the same size as early one dollar gold coins. Weight is a lot less then the old ones.
I googled and came up with what I'm assuming is your post over at tnet It looks to be some sort of token and not an actual coin to me.
IF ITS RAIROAD TOKEN I HAVE NEVER SEEN ONE LIKE THAT USUALLY THE NAME OF THE UNION IS ON IT SOMEWHERE.. LOOKS LIKE UNION PACIFIC EMBLEM ON IT AND A BEAVER.....INTERESTING THOUGH