Notlob,
I KNOW I have a fairly encyclopedic post on the 41-C-15 Tool Cabinet on drives' cabinets thread somewhere, but having exasperated myself trying to find it, I will just re-post some photos for you…
Here is a WWII model, like yours, owned by a G503.com buddy, also missing the security bar
View media item 76009
Here is mine. You can see, it’s exactly the same size, drawer arrangement, etc, with the butcher block top, but the pulls are free-swinging.
View media item 76005
Here is mine in place down in the Lugzsonian with a grinder and a vise clamped on the overhang.
Here is a c.1941/1942 photo of the cabinet in an upper echelon tool-set layout…
And here are a few of them on the back of a CCKW, c.1943...