Yes, it certainly looks it. I have a SO box similar to this. However, what he's asking is way more than what's it worth. And don't let those tools in the box influence you, b/c they're not worth all that much. I wouldn't pay more than $50-75 tops for it. It looks like a good candidate for a toolbox resto, but it's going to take a lot of work. See the thread on my signature if you're interested in doing one.
As for age, '70s, '80s. If you really want to know, ask the seller what the two digit date code is. Should be stamped in the lower right corner of the back of the box.
Good luck!
