Numbering on Platinium Magnus... 3 of 30?

So a friend pointed out this detail on the Platinum Magnus box.
It says 3 of 30.
So... If Platinum Optimus and Platinum Omega are 1 and 2...
What are the other 27?
(Not sure if this was already pointed out.)

It says 3 of 30.
So... If Platinum Optimus and Platinum Omega are 1 and 2...
What are the other 27?

(Not sure if this was already pointed out.)
