Rare 1992 Dennys Christmas Mugs that Change Color Set of 4 in Original Box

This is a Vintage Rare 1992 Dennys Christmas Mugs that Change Color Set of 4 in Original Box. the cups are in Good Condition with normal ageing and wear. on the box. No chips or cracks that I could find. They each measures a Large approx. 3 3/4 inches tall and approx. 3 inches across the top area. They come in the original box and are ready to give to a Special person as a gift. There is a place on the box to put your name and their name. These mugs all change color when heat is put inside of them. I pictured one of them and how it changed.. A Great Rare find.