Close Encounters of the Third Kind

This shot is of the mothership as seen in Close Encounters of the Third Kind. It is on display at the Steven F. Udvar-Hazy Center and this model has some very unique and interesting features to it. The model makers placed several small items on the model as jokes, including submarines, cemetery plots, school buses, mailboxes, etc. The item that was of most interest to me is a model of R2-D2, which you can see in the photo. I took several different shots and angles trying to get the best one with the least amount of glare and reflection, while preserving the clarity of R2-D2. I didn't see any other "hidden" features in this shot, but can you?

Mothership from Close Encounters of the Third Kind