Actually, it is an ERROR. I think you are misunderstanding because you are not seeing the SERIES name on the packages.
Here are some more pics to clarify what I mean by ERROR.

The "third" one you mention above is this one, from the SPEED series, #02 of 04
If you look closely, there is an Autobot logo on the roof. It is very faint, and therefore difficult to photograph,
but I have done my best in short time:
image


The two cars I showed above are pictured Separately below. You will see that Both are in the COMMANDER SERIES and are Both #02 of 04.
You will see that the Regular one has a logo on the Hood (pic on left), and the Error (pic on right) does not.
What makes this an Error and not a Variation, you might ask? I have checked every one I have found in stores, and have yet to see another with no logo on it.
image image

Either way, I still think its a very cool find.
Thanks for looking.

image
Cesar 10/1989 - 10/06/2006 RIP Little Guy =^..^= Miss You!
My definition of a free society is a society where it is safe to be unpopular.

--Adlai E. Stevenson Jr.(1900 - 1965)