Thanks John. Do you have any tips to get that “dealer display” look? Which accessories does the d-105 have?
I think the main thing we see on these are a painted on base (usually a "Lionel green") with some of the Lionel 919 "grass" sprinkled on the wet paint. The 919 grass was actually a product sold by Lionel way back and can still be found on Ebay. Some folks use dyed saw dust or other something similar to get that display finish. The displays also usually had painted on road beds, in either gray or an off white. And the last step is frequently a mountain with two or more portals finished in a multi-color arrangement unique to Lionel displays.
The 105 had the following: Gateman, Barrel Loader, 497 Coal Elevator, Oil Derrick, Rotary Beacon, Switch Tower, Water Tower, and the usual Milk car and Cattle car. Also the normal complement of track side signals...block, semaphore, crossing gate, etc.
Since a picture is worth a thousand words, here's a link to a very comprehensive thread here on the forum on Dealer Displays. Full of great information and pictures so you can actually see a variety of display examples.