The reason I asked you if you cut it open is it can provide very useful insight about the disease. I suspect this potato was grown in a soil contaminated by Root knot nematodes (Meloidogyne sp.) but you can confirm that only by slicing the potato open.
The most common Potato scab form in Europe by far is Netted scab, which looks radically different.
Powdery scab in Europe is relatively rare but unfortunately very often associated with Potato mop top virus (PTMV), which is easily spotted on foliage.
The Wart disease manifests itself in different form: by the time potatoes are harvested the warts have already taken the diagnostic "cauliflower" shape and blacken very quickly when exposed to air. This doesn't appear to be the case.
