Flintstones McDonalds glass mug. Vintage. Tree Stump. Like new

This is a clear glass mug that was a giveaway at McDonald's. There was a series of these mugs featuring The Flintstones. this one is the Tree Stump. it's says "The Flintstones" and ,:Mc,Donald's " on the front and the bottom. it is in perfect condition.