So I got this 120 tunnel with the accessories that came with the factory Pre-War display layout I'm working on. It was pointed out to me that it's somewhat unique in that it is "double walled" , that is it has another sheet metal wall on the inside rather than the single-wall / hollow on the inside version commonly seen. I have looked at every 120 tunnel that has appeared on Ebay for the last several months and have not seen another like it.
Could it be an early version and the inner wall was subsequently eliminated as a cost savings measure ? Does anyone here have an example like it or more information on this variation ..?
Thanks
Gerry C
