I have a vintage metal storage box.  It has a great industrial look to it.  I'm not certain if it was a lunch box, cash box ect.  It measures about 7" in height from the top of the handle to the bottom of the box x 7 1/4" in width x 5" in depth.  The paint is very scratched all over with a bit of minor rust showing through as shown in my photo's giving it a nice aged patina.  There are some dents as well, nothing major but worth mentioning.  The top closed tightly over the hook that juts out.  This is a great antique storage box.

Lunch Box Antinque industrial