RARE or common Invaders ?

[MacDLSA]

Hi there
I'm Marco from Italy, new here but #NOT# new on VCS.
I own my PAL "Light sixer" since I was 12 ( 1982 ) and recently ( don't remember if it's 3 or 4 years ago... ) I built a "new house" just for it, that is now placed in my little garage/arcade room

mPac-ManAtariVCScab_01.jpg (24.21 KiB) Viewed 22124 times

I have to ask a thing that I already asked in other Atari sites/forums...
I own a PAL Space Invaders red cartridge ( CXCX2632P , release date: 1988 ) which has a blue box, designed the same as the most common red box ( yeah, the only difference is that it's light-blue instead of red ).

BlueInvaders.jpg (126.39 KiB) Viewed 22124 times

It's brand new & sealed, so I don't want to open it... I assume it has a common red cart inside because I already read it on Atarimania "dedicated" page.
BUT
like I said in this thread's topic: is it rare or common ?
Could we all assume it's a "R2" like the other Silver & Red boxed until it's not recognised in the R.list ?
THNX

[MacDLSA]

Sory ... wrong section