Wow! Nice acquisition - and very helpful.
The packaging would be a first for a Deco spinner on GJ as far as I know, even if it was commercial. That it's clearly military, clearly aviation ("Class 17-B" was the supply designation for US Army Air Forces Small Hand Tools, and later, for USAF Nonpowered Hand Tools), and clearly ordered as a separate item (as far as I know we have never seen them in sets with other Deco pieces), lends credence to much of the collective speculation about the users and use cases for these spinners.
The big surprise was the contract number.
In my experience with military boxes, packages, labels etc for hand tools and other items, there is overwhelming precedence for the practice of contracting agencies embedding dates in contract/order numbers. Given that practice, it sure looks to me like the "45" in Order No. (33-038) 45-3408-AF could signify 1945.
And, lo and behold, there is some evidence to suggest that it might.
While that exact contract number does not appear here, similar contracts with the Air Corps under the exact same parenthetical contract series ("33038"), used as a prefix - do. I would suspect the reason for the absence is either the contract starting later (11-45 or 12-45) or perhaps not large enough to merit the list, which had a minimum $50,000 total value cut off.
I don't know why I never looked up Deco in the Wartime Contracts books before. Probably because I never thought they were a wartime tool or supplier. I thought they were 1950's at the earliest.
One interesting oddity is seeing the "AF" by itself. In this case it would have to signify "Air Forces", short for US Army Air Forces, because the USAF was not established until 1947. We usually see it as "AAF" (or the "AC" for Air Corps, which the USAAF encapsulated as a higher HQ in 1943).
Or the "45" is an anomaly, the "AF" actually does refer to Air Force, and this particular tool and pgk are postwar.
I'm not sure. Either way, this goes a long way toward legitimizing Deco as a wartime aviation supplier and the tools as potentially wartime, making all those SWAGs about the "44" in the model number signifying a date suddenly seem not so wild after all.
Thanks for posting.