Thanks Foolish Heart, yes thats the B66 "S".

Ooops, I confused the B67 as the female version of the B66. B67 and B66 is pretty much identical, apart from the mounting. Turns out, I have the female version of the B66, which is the B66 "S". I'm a guy so it didnt really make any difference but if you're a gall you'd probably benefit in having the "S" versions.