Vintage Snap On Hand carry box--ID ?

[lostmind]

I searched the on line Snap On catalogs and haven't found this box.
I'd like to ID the year and purpose. Somewhere in the 1935-46 era.
It's smaller than a K24 or K25 ,
And has a tray with 9 compartments . Has a leather handle ,
measures 18 1/2 " long , 6 3/4" wide , 4 1/2" high.
I'm guessing it was a socket set box? , For 1/4 , 3/8 , and 1/2" ?
Heavy box for the size , be nice restored.
I'll list it for sale after I can find out something about it.
Thanks for any input

 

[snapmom]

I think its a KR-250. Would probably date mid to late 40s. Its for 3/8 drive tools. Nice box.

 

[lostmind]

I think its a KR-250. Would probably date mid to late 40s. Its for 3/8 drive tools. Nice box.

Thanks ! That was fast. Looks like 1948 . The tray looks a little different , but it's just an illustration. Says " tray has divided compartments."
All the dimensions match , so I call it a KR-250.
I appreciate the help and quick reply.