I stopped riding about 10 years ago (cancer) and I recently decided to clean out my stash of vintage bikes. I came to a 700c front wheel with a Venus TCR rim and a Specialized hub. The hub has turned a sort of light "bronze" color and is stippled with tiny white dots. Mother's polish does not seem to touch it. The rim is cleaning up pretty nice, but the hub is not--after about an hour's work and half a small jar of Mothers. The hub itself still turns smooth as silk, and I now have the outside to a semi-shine, but no where near to what his hub was when it was in its "glory". Anyone have a suggestion? None of my other parts (so far) have this problem including the hubs on the wheels stored next to this one.

The corrosion must have gotten under the anodizing on your hubs.
Only way to get rid of those white dots and the dark staining is to take the anodizing off and polishing the aluminum.

OK. thanks. I will try oven cleaner and see if that works -- it is supposed to remove anodizing.

It does but will likely end up splotchy and may have poor effect on the spokes and hole area of the hub. I would proceed with caution and maybe try Scotch-brite, Turtle wax rust remover chrome polish and lots of elbow grease, not going to be easy or fun and not likely worth the outcome.

Oven cleaner, and not the latest safer stuff might do it... I would not on an assembled wheel.

really depends what your goal is.

I agree. I’d do this externally on a disassembled hub, but my concerns would override my desire to polish if the wheel were built. Doubly so if the bearings were smooth.