Combattra DX Godaikin variations?

[godaiking]

I know there's the window box and photo box, but as far as the toy all I know is there's a gun metal mouth and a greyish white mouth. Which of those came first in Japan?

In my green arrow graffiti book, it has the greyish mouth version on the cover which leads me to believe this is the first issue?

[cybermuton]

I have a window box and a combine box shogun version, and both have a silver mouth...does that count as grayish white or gunmetal?

[godaiking]

Here's a pic of the greyish white mouth version.

I kinda like the silver mouth version better, but either is fine to me.