Vintage and Rare plastic Christmas mouse music box

This toy wind up music box was made in the 70s for Kmart stores. It is a rare find. Mouse dressed up like Santa delivering toys. It is animated; when wind up it plays "Santa Claus is coming to town" while the train moves. Preowned in excellent condition. Only two of the 4 cars are missing. Don't affect the quality of the toy, but it is priced accordingly.