Not at all sure what this one is
Oh and btw it hasn't flowered yet!
Its a bit blurry, but I'll take a guess at Mammillaria haageana. Check out the name and see what you think.
Check out S&B's response to tis post ant then you can have a close look to see if it fits the bill!
SORRY, dunno why I sent that last post before I was finished, it should have looked like this...
Also check out S&B's response to the post on the link below and then you can have a close look to see if it fits the bill!