I think it's Echeveria derenbergii.

Rodiq

Rodiq,

I'm now certain it's a hybrid and suspect E. derenbergii is one of the parents. I think the spots on the flowers come from a Graptopetalum.

If a Graptoveria, which one???

I'm stumped.

Al

If an Graptoveria, could be this one, but i'm not sure about the name, i just found one:
http://albino.sub.jp/cgi-bin/database.cgi?equal3=Graptoveria&equal4=cv.%20A%20Grin%20One&tid=list3

Anyway, I still believe it's an Echeveria.
Rodiq

Thanks, Rodiq, for the link. Several members of other forums think the plant in your link is the one. I think I agree also. x Graptoveria 'A Grin One'.

Al

Here is a link that might be useful: My choice