How to identify LSD

[innozent]

I got aftermarket LSD in my gearbox, is there any method to identify it is 1 way 1.5 way or 2 way and the brand of LSD. after taking out the gearbox?

[incoming]

how do u know its aftermarket?
probably best to take it to a diff specialist an have him pull it apart...

[innozent]

so if they pull them out they can see what brand is it?
so there must be some brand label on it?