Interesting thread,oily.
Here's my contribution.Ive not seen another box like this one.
My boss was in the Navy in the late '80's and this is a box of sockets they equipped him with to perform his duties as a welder.
He used mostly Thorsen and Kal tools on the ship.
When he left the Navy,he brought this box and other tools home with him.
I acquired the box from him,as I really like the design,especially the latches,and intended to put some sort of socket set in it. Probably not a Thorsen,as I wasn't interested in the brand at the time.
Since then,I made a trade with my boss and acquired the sockets that probably came in this box,with a few missing and a few split.
The cool part to me,is the paper label still attached to the lid.
Thought this might be of interest to you,if you've never ran across one.