Andrew,
I think it probably came from Stan Can tools. They were a Russian importer of machine tools in the 80s I can't find them listen now. The machines came in from Russia and the electrics and controls were installed here. Most of the fellows working there had two tool boxes one with Russian tools and one with Canadian/USA tools, they did dust off the tops of the Russian boxes but I don't think they used them.
Regards,
Gerald.