Missing link b12

[Oldtuleguy]

It has a brass tag and is black, which normally would place it 26 to 31 or so. However, the shelves for the sockets and the hangers for everything else seem to be different, even the brass tag is odd. I can only speculate it is a missing link oddball between 25 and 26.

 

[Oldtuleguy]

Here are some pics with where I think stuff goes. No catalog reference so not sure