Being it has corners braces you might be able to just replace the whole bottom with sheet metal. Depends on what you'll do with the box.
I had an older S-K box given to me that had one corner rusted out. I cut out the worst area with a dremel tool and made a "patch" out of galvanized and riveted it in. It will never be a beauty queen but it is usable. It holds my 1/2" drive Bonney sockets and several ratchets.
Interesting, Don, because I've never seen an unmarked E.J. McAleer, but you could be right. It's definitely not a Union or a Hamilton. Too bad the tray wasn't present - that would help.It’s very likely that your toolbox is an unmarked McAleer based on the construction details and hinge elements. These boxes were painted olive.
Interesting, Don, because I've never seen an unmarked E.J. McAleer, but you could be right. It's definitely not a Union or a Hamilton. Too bad the tray wasn't present - that would help.

As for paint, I restored one a few years ago. Same process as you, but I had to do some brazing on the bottom, and I had it bead-blasted. For the finish, I prefer a well-used but well-maintained look, so I actually used some layered painterly techniques to create age and patina effects. I don't want to spam your thread. If you're interested, let me know, and I would post several photos and the details on the paint brands and colors and the process. If not, no worries and good luck whatever you decide to do with it in terms of paint.
Done. Link here.Lug that would make a very interesting thread of its own.
How about it?
Here is a picture of my first unmarked McAleer. Every detail is the same except for the lack of marking and the trays are totally identical. It was a $.99 eBay purchase but the freight made up for it. In replaying the video on the original post, it looks like Ben has a tray with original paint on the bottom. The handle on his tray doesn’t exactly match the McAleer trays though. That and the rounded corner supports may indicate possibly a different manufacturer.
-Don

I didn't want to distract from your thread so I put it in a separate thread, linked here.I’m very interested to hear how you approach the paint and the patina effect you mentioned - that sounds like something I’d be keen to try.
That is a strange duck. Don may be able to comment further on the boxes he is identifying as unmarked McAleers, but the trays in the marked McAleer boxes I have had had a round handle that pinched into a pronounced V and then a flat area where it joined the tray. Your handle never goes flat - it stays round directly into the end of the tray.Here’s a photo of the tray when I was working on it over the weekend. I haven’t seen another like it in all the photos I’ve found and searches.
The closest I can find, and that's relative, is Waterloo. They are sort of "triangular" (round with a peak, I would say), not round, but they attach to the ends of the box the same way.I'll need to check to see if I can find a tray with a handle like the OP's.