Great watch and great ad. I'm thinking I. Magnin & Co made the case for these re-designed Accutron clocks. While subject "SpaceView" Accutron is different than the accutron in the ad, it will not matter, as there is no official "Bulova Model Name" for this configuration.
I'd go with Non-Conforming, since we probably won't ever find a Bulova model name.
One definition of "Non-Conforming" is loosly "a Bulova-made movement, dial, and case put together into a configuration other than that of original Point of Sale". I'm paraphrasing here. While we do have several "Non-Conforming" watch records which have "parts other than Bulova", we keep those records for the information they contain, even if Bulova never produced the configuration or made all the "parts". I'd say we can keep this record, with its non-Bulova made case, since we have a nice third party ad for a company doing this re-issuing. It shows the varaition of third party use of Bulova Accutrons, in this instance.