If those are AISI references, their DBE Superrenches were Chrome-Molybdenum (4xxx) in 1939. The finish was chrome-plated. I did find a note on page 30 pertinent to your other query thread that reads, "Also finished in baked grey enamel at a lower price."
Not AISI but JHW model series numbers. Baked enamel, I saw in another catalog, could have been 401, not sure, a reference to unfinished as a choice and that being baked enamel, forget the color but think it was gray. Also in another catalog the 6000s and the 7000s and 8100s were listed with Chrome finish and the 8000s and 9000s were listed with cadmium.
What color is cadmium finish anyway?
And, careful perusal of an earlier catalog, '37 I think it is, makes plain your well taken point, of which I was completely ignorant being just focused on one tiny fragment of total JHW production, that there were lots of "Superior" wrenches made of carbon steel and that they were a separate line from the Superrenches. In fact one catalog has a long paragraph explaining how wonderful the Superrench steel is in comparison to what has gone before.
Thanks for the education!!
DJ