Another board, same question:

I've got my 6th boxed system today and I thought the box was kind of strange.
Maybe it's normal, but I haven't seen it before.
Or, I've seen the front many times but not the backside.

I don't have a camera right now so I can't give you any pictures, but if you look at the front page pics of systems (the NES Deck Sets link) here at NesWorld, it's the first one.

In the front, the box is normal but the backside is all grey!?
Is this normal? No pics or text, just grey!

It's a SCN (Bergsala) release.