Thanks, OTG. Believe it or not, even though it seemed almost impossible for me to imagine that the set was factory, and I never saw anyone here on GJ mention it before - not even when my Chapman midget sets thread was active (first in 2015, when I found my first wartime set, donated to the company museum at Chapman; and then again in 2019, when I found another wartime set, which I kept), I did look through some catalogs, just in case. Just not late enough. And there's a reason for that, as I will explain.
If anything, this whole thing just got more wonderfully bizarre for me.
Apparently Snap-on carried the set from 1960 through 1965. I can't find it any earlier, anyway. In 1960 (Cat X, page 63), their phonetic part number for the set (CMS-160) - Chapman Midget Set, was even more revealing of the supplier. No case was listed or annotated in a footnote. Just the bits and their standard R-180 "Boxocket" ratcheting wrench. In 1962 (Cat Y, page 65) a footnote said it came in "C-20 kit bag", which is probably the see-through vinyl pouch in the eBay sale. No case mentioned. In 1965 (Cat CZ, page 69), they changed the part number to CRA-180, I suppose implying Chapman RAtcheting, and now the footnote includes a "GA-168 metal case." No photo of the case, unfortunately.
I already think it's kind of odd and
quaint that Snap-on would sell a midget screwdriver set centered around the idea of ignoring the 5/16" hex opening on their standard R-180 "Boxocket." I mean, c'mon, guys. It's something improvisational that one of us would do in our shop in a pinch. But they actually developed and sold a set around that concept!
Then Snap-on went out and found an OEM for the bits. You have to understand that Chapman is
still a small operation. Still family-owned, too, by the way. But small. Excellent reputation among many, nonpareil with some, including me. But they were even smaller back then. Catering to specialty markets, such as gunsmiths. So small, so mom-and-popish, that their early kits were supplied in eyeglass cases. Early as in WWII. Were they still providing their sets in eyeglass cases in the 60's? (I didn't think so. In 2017 their plans to issue a 75th anniversary set in vintage eyeglass cases were scuttled by their inability to find a supplier. But I plan to call them today to talk about it.)
It doesn't strike anyone else as strange that Snap-on was selling midget bits sets in the 60's - in eyeglass cases?!
Now look at that Pittsburgh area Snap-on dealer sticker again. It has a pre-Zip Code postal code. Okay. Those were in place as late as 1963, so it's possible that was put on that lid in 1963, and maybe even in 1964, using up old stickers, after the Zip Code was established. But the phone number is hard to explain. Area codes were established in 1947. It's true that it took a decade or so to fully cover the US, but cities had them right away, including Pittsburgh (412). So why is there a 1930's and wartime phone number on the Pittsburgh dealer's eyeglass case?