Boosters' authenticity by shadow line

[iArab]

Trying to learn more about real vs fake vintage booster boxes.

Does anyone have more info on the shadow/thin line around the WotC text? I’ve only found it on one box, all other boxes don’t have this shadow. Trying to understand, does that just mean all other boxes I’ve looked at are fake?

!You see the line, most notably around the Z

[pfm]

To me, this looks more like a print variation than something that can be used as an authenticity check

[xileets]

Data not found.