I see, I don’t know much about sports cards so that’s interesting. Another thing that might help you is if you refer to this edited version of the Charizard you posted
Everything in the box that I drew on the card is printed consistently between all first edition base set Charizards as far as I know. You’ll find that everything including the artwork, text, energy cost, description, HP (so on and so forth) is consistent between cards and lines up the same way. It’s just a matter of where that whole box is positioned on the card. I don’t know how the printing process works but I’m assuming that what causes cards to be off center is how they’re cut. I’d love to be corrected if I’m wrong though. Hopefully, this was helpful and I didn’t just make it more confusing.
You could even go into like keynote or ppt and put some lines and get the length values fairly easily for centering. Albeit not the best way, and you need an image straight at the camera, but you get the picture.
Great measuring method! With this centering, it would be still right at the outer most limits of a PSA 10 according to PSA’s grading standards. But obviously there is no real life scenario where this gets a 10, even if everything else is actually flawless.
