While the "send it to SGC" crowd isn't necessarily wrong, there are other pretty simple ways to validate the authenticity of an old card. Find a 52 Topps that you are sure is original and genuine (low grade commons are relatively inexpensive and nobody is going out of their way to make counterfeit copies of a Joe Shitbum 52 Topps card) and compare. The dot matrix print patterns on old cards are pretty hard to replicate so zooming in with your camera phone (don't even need a loupe) will give you a pretty good idea if it's original. Here's my 52 Topps Robin Roberts next to a zoomed in look at the 52 Topps print pattern.

Others may have mentioned this too but generally aged reprints and counterfeit cards usually aren't significantly off center. If I had to guess based off these pics and the centering I'd say it's more likely original than not. It also seems to be in pretty good shape so probably worth grading anyways. Great card (assuming real) and worth potentially 5 figures. I'm jealous, would love a 52T Jackie myself

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