[Belair62]

I have restored a few sets. Its a possibility there were stick-on weights attached at these points of the rim. Not a good location since most folks stuck them on the back but I have had a few that were mounted this way.The weights have a foam backed adhesive that over the years traps water and corrodes deep into the wheel face.The bad spots I have seen are a little more rectangular though but no matter what you do these spots won't come out. Kind of like a hard spot on a drum or rotor.Around the edges was pitting too.