Dealer Layout - 1948

I have a Lionel boxed set number 1449WS from 1948; it contained the 3462 operating milk car. The box for the milk car, and the set box, both have a label attached which reads: “NOTICE PLEASE NOTE THAT THE MILK CAR PLATFORM IS NOT PACKED WITH THE MILK CAR BUT IS MOUNTED ON DISPLAY.” My assumption is that this set may have come with a Lionel factory layout, on which the platform was mounted. Does anyone know whether this set was part of a dealer layout? or, is there another explanation for these labels? Thanks for your input!

A blessed Christmas to you all.

Well, done a little research and found that a dealer is offering this set and representing it as coming with D10 dealer display. Anyone have information on the D10 dealer display?

Trainz has a D-10 display for sale . Here is the link.

http://www.trainz.com/p-160130-lionel-1948-10-dealer-display.aspx?source=pjn&subid=3578

Thanks for the link; I understand that the D10 also had a layout in addition the the shelf display. I appreciate the time you took to respond! Merry Christmas! Dave