We have not seen that kind of condition on this head, but if moisture is left on the head for a length of time, surface conditions like this can occur. It is plated carbon steel, so it most likely is just surface rust. You should be able to take WD40 with a clean cloth, wipe it on the surface, and remove the spots. Or, you can hit it lightly with a scotch brite pad and it should come off. If you don’t want to attempt these solutions, no worries. You can contact us and we will exchange it, with the understanding that it could occur again if the surface is not kept dry. I see this occur mostly when a putter is put into a head cover after playing when it is wet. The moisture gets trapped against the surface and never dries and you get surface rust.