Lionel white box

I recently purchased a 6-5709 Lionel REA Reefer car and it came in a white box with red and black lettering with some pictures of other rolling stock on it. Can anyone explain the box. Were they for the cheaper rolling stock or what?

The box is the standard post 1969 Lionel box. MPC re-introduced the orange and blue scheme for special run/high end cars and engines only. The number designation for your reefer is the post 1969 number. An example of the car is currently listed on e-bay.

http://cgi.liveauctions.ebay.com/ws/eBayISAPI.dll?ViewItem&rd=1&item=6524457180&category=28235&sspagename=WDVW#la-image-1

Thank you very much.