M. estebanensis

Hello everibody
Few days ago I bought (by post) some Mamms from a nursery near Torino.
Among this a pair of M. angelensis var. estebanensis K309, but the two plant are a little bit differents. One have all the areoles with a central spine hooked.
Do you think they can be the same plant? and, do you think they are really M. estebanensis?

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