All of the toolboxes in the ‘54 catalog shown here
http://bartlettstreet.com/toolcatalogs/ProtoC5428catalog.pdf
look to be 100% red.
-Don
Thanks for that link. I finally downloaded the catalog, and the boxes are different than mine, none of the same drawer configuration. Interesting that the handles on them are the newer style like found on the Duplex boxes, but the box corner supports at the side of the drawers are the wider (about 1 1/2" wide) of the older Plomb boxes. The Duplex boxes reduce the corner bracing to about 1/2" width, to give more drawer room.
Since mine has the older solid handles instead of the newer hollow metal handles, and has the wider corners, I'm going to hazard a guess that it's older than that 1954 catalog. That might explain the green color, more like the Plomb stuff.
The paint appears to be 100% original, as does all other features of the box. but I've never seen another green Proto box.
The box was owned by a local Oldsmobile dealership owner, who retired in the early 1980's (information relayed by his children, running the estate sale). He brought all his Oldsmobile manuals home, along with his tools and quite a few small spare parts like switches and light bulbs, and they've been in his small home shop ever since. It was all for sale last weekend, I was lucky to walk in to the sale at the right moment when nobody else had claimed the boxes. I had to fight off numerous potential buyers as I looked through the rest of the stuff while waiting for the person running the sale to put sold tags on them.