Mammillaria coronaria????

I got this plant labeled as Mammillaria coronaria - it is probably an old name (Haworth ?). Could you say something about a new identification of that one?

I have almost the same plant, labeled as neocoronaria. Nobody knows what to do whit this plant. Is it spinosissima or something else? It was also never refound. In Craig's book it is described as coming from Real del Monte, Hidalgo and first described as M. coronaria (Haworth), but later changed by Schuman in neocoronaria. That's all I know....