CollectingSnapOn.com

My dad gave me this old SnapOn toolbox he had, but he has no idea the age.
I have looked all over the box and I can't see any model or serial numbers.
I am starting to clean it up and just wanted more information.

I found a box that looked just like it from the late 60's, but it had the logo on the left and not the right.

I am attaching a few pictures.
If you need any more pictures please let me know. Thanks in advance!

Thanks,
Jeremy

Looks like a mid 70s kr 557 or 558

Thank you.

Check bottom of front panel above left caster. My 557 was stamped lightly in that area.