This set appears at a glance to be just a common Marx four-wheel plastic set, but look a little closer. See if you can determine what's rare before you scroll down.



Here is the box. No give-away here.



The set number might give you a clue if you are an extremely advanced collector. No? Check out the caboose. It is the red NYC 18326 caboose with herald. A rare bird in an otherwise common looking set.