Lugz, your machinist box is an Asco Art Steel New York box. Good find!
Many thanks for the link!
I was able to track the NSN crudely scrawled in yellow paint on the top to an early 1950's armorer's kit for small arms repair. The wartime FSN for the same kit was 41-K-8425. Below are some pics of other boxes from a WWII forum I participate in. The owners will be happy for your lead as nobody has been able to identify an OEM prior to this!
The box in this postwar French Army NOS "repack" from 1951, owned by a WWII collector in France, came with the entire kit.
Here's another one:
And a third in the thumbnail below.
All the boxes exhibit common features and yet some slight variations.
- All the boxes, including the CL ad, have the same center hasp, top handle hardware, and drawer pulls.
- All the boxes have different top handles. The handle on mine is leather. The French repack box is pressed steel, but shaped exactly like mine, hinting at it being a direct successor. The handles on the others rang from slimmer pressed steel (CL ad) to a simple bent rod (thumbnail below).
- My box and all the boxes I posted have a drop front door/work surface with the long recess the width of the panel (for small parts and pieces) and the side handles are all the same.
- The box in the CL ad has three dimples in the drop front and different side handles.
Almost impossible to figure out a progression, but I'm pretty confident mine is wartime. I believe the French repack also used a late wartime box. Hard to say on any of the others. Could be. Could be KW.
Again, though, very cool that we now have an OEM lead! Thanks again.