This auction is for a excellent Boston & Maine piggy-back flatcar and trailer.No box. O-scale It is Lionel Boston & Maine #16911. This flatcar is in excellent condition. It has operating knuckle couplers, metal wheels and axles. The trailer is a Lionel Boston & Maine Railroad piggy-back trailer. This trailer is also in excellent condition. Here is another Boston & Maine Freight car to add to your B& M collection ,or put into your rolling stock inventory. Thank you for looking, and please check my Ebay store for more wicked good stuff that I have for sale. .