Yep. Proto, Plomb, Snap On, Craftsman, Kennedy, among others. Most any well known US made vintage box is worth a few bucks but it has to be in good condition. If it looks like it fell out the back of a truck leave it. There's a forum I hang out on called the garage journal where there are lots of hardcore tool & tool box collectors. Good place to poke around and see what others are buying. Lots of oddball tools are worth bucks too. Example.. I recently bought a Plomb combination wrench that was an odd Grey finish and had a part number that began with "WF". Come to find out it was part of a WWII issue set of tools made for Wright Field and there are guys who collect those. My preference is automotive and motorcycle manufacturer marked tools from the early years. Ford stuff is common. Currently working on completing a Model A kit such as you would get with the purchase of a new car. Here are my tool boxes. A MAC set I bought new in 1974 when I was just starting out turning wrenches for a living and I still have it. And my current Snap On box I bought about 5 years ago.