Deco bodied military trucks were equipped with a rear view mirror from the factory. The parts manual indicates the mirror was an exclusive military part, and for 1941 it was a new part. The image gives you some idea of the general appearance. I have seen vey similar (or perhaps exact)mirrors show up on ebay.

[img]http://www.surfacezero.com/g503/data/3764/medium/IMG_61632.JPG[/img]

[img]http://www.surfacezero.com/g503/data/3764/medium/IMG_20894.JPG[/img]



1941 Chevy 1 1/2-ton WW2 4x4 dump truck
In the Stovebolt Gallery
Lots more pictures