this lot # keeps comming up. as far as i've heard, they are legit. but for some reason it keeps comming up. so that makes me wonder.
the only lot #'s i know of the serno says are fake is the ol' mnk612a.
some of the things to look for are the disk white cake for legit, snow like white powder for fakes.
the lables on the viail that have rounded corners are legit. and if they have squared corners, they are fake.
as for ms. SG, i read a post on one of the bb'ing sites about your question. i'll see if i can figure out where it was. i didn't really read it all that close but i do remember it talking about the colors of the tops. but if the powder is not disc, it don't look good.