I found this old toolbox at a Swap Meet last month. I was thinking it was SK, but am now thinking it isn't. If it was SK, it would be wrinkle-finish green, but the original paint on the sides of the drawers is gray.

I looked up the P&C boxes in the 1939 catalog, and the 9323 Heavy Duty Tool Box seems identical to the SK 6610.
I'm beginning to think that the Brazil Stamping division of Sherman Klove made this box for P&C.
I am attaching a .pdf of selections from both the P&C and SK catalogs that show the two tool boxes.
What do you guys think?