Lloyd, first we now have two different ones! Yours very well may have been a room key tag, with the heavy hook on it and the wording on the back!

Mine on the other hand looks exactly like yours EXCEPT both sides are EXACTLY the same! Bird, Fabulous Flamingo, Las Vegas, Nevada.

Maybe mine is an ERROR room Key! Might be a first! Could be worth hundreds of dollars!! I will try to scan my other key and tag later! Let the bidding begin for your tag!! Good luck!