Civil Defense Cabinet?
I thought I had a picture of it but can't find it. Same cabinet, but had "approved" CD labels on it.
Below are some of the accessories for the SS-1R and the SS-IBS. I have them all except for the antenna matcher which was actually only detailed in the SS-IBS manual (see below). I had the rack assembly but had no use for it, so found it a new home at Dayton several years ago.
My good deed for the day