What is that box in the background?

[Wamsutta]

It's a Snap-on of some kind, but which model?

I just love that bright yellow. Reminds me of new Tonka dump trucks and payloaders when I was a kid.

 

[KnurledNut]

Looks like a KRL1023

 

[Wamsutta]

I believe you are correct KnurledNut. I count 9 side drawers on the right side which would make it a KRL1023.

My source is Catalog 900, April 2007.