I like the hubs & am slowly restoring a pair of 1979/'80 sealed bearing types. But Ady is right, the cheap arse painted finish, is crap. Just one scratch or paint chip that exposed the alloy underneath would lead to corrosion which worked its way under the paint leading to more paint falling off.
Painting them meant that they did not need to fully machine each hub & many will be seen as essentially been pulled from the casting mould with the mould join mark still evident.
ACS advertised this finish as being better than anodising. ................ They lied.