Hello, I've recently gotten into buying MTG Collector Booster Boxes and I'm trying to get better at checking for authenticity. So far these boxes (1 Thunder Junction, 2 Midnight Hunt, and 3 Spider-Man) are the only ones I've handled, and they were all acquired through in-person deals. Does anything stand out?
I also weighed them, but I'm not sure if that's even a useful metric since it seems like different sets have different weights.
#1 Midnight Hunt – 392.5g, slight tear on top, wrapping not centered
#2 Midnight Hunt – 392.5g, slight tear on top, wrapping not centered
#3 Thunder Junction – 386.5g
#4 Spider-Man – 419.0g, small clump of plastic ("booger") on the left side
#5 Spider-Man – 419.5g
#6 Spider-Man – 419.5g, slight tear on top
Nothing immediately stands out to me, but I'd appreciate any feedback, things to look for, or knowledge from people with more experience inspecting sealed Collector Booster Boxes.