As noted the wheel does have the BB, and yes Steve, it did appear to have tire bead marks from a tire being mounted at one point? I say did...as I have now restored the wheel to "normative practice" along with 4 other wheels. I get what your saying Kurt, but as William stated, if parts were needed from stores, they could have been taken due to a shortage and ended up on, or in a car. Having adopted the CRG normative practice and sometimes over restoring, this wheel will no longer be a possible straggler as it is now black and silver.
One point to note, all of my other 4 wheels before being restored were spun and trued up. When it came to balancing the new bias ply tires, all required significant weight...except for the one that was the claimed original spare. It spun perfect on the road force balancer and was noticeably better than the other 4 which had all been recently trued? Go figure.
Here's how they turned out once restored. (i did leave the factory paint gobs between the outer hoop and center so I could tell which one was the suspected spare)
Wheels were then fit with a non factory tire of my choice and placed on the car to get it as a roller for moving around. Today they will be replaced with a set of Day II Cragar's and will go into storage along with a full set of NOS derby caps and 4 clip trim rings. I'm sure they'll be seen again someday?