I need help identifying a Kennedy toolbox I came across. It's a 7 drawer toolbox looks like a 520 series but what makes it stick out is that it has brass handles on all of the drawers and an old 3 digit seasmee combination lock on it. After 3 days of scouring the internet I have not seen a single photo of a Kennedy toolbox with this type of lock on it. Can anyone give me a rough year they might have made the Kennedy toolboxes with that type of lock and brass drawer handles? And it also has the old school drawer guides where the locking clip is inside the runner and you have to fabricate a tool to slide down in-between the drawer and the runner to get to. I'm thinking a limited edition maybe 30's or 40s but I'm not sure. It has the classic kennedy signature inside the lid but no model number stamp.