does anyone know how to verify if a Prada shirt is legit?

I got this shirt for what I assume is a good deal ($120) at a local vintage shop, but in hindsight maybe too good of a deal? The place is really solid and they uploaded it as Prada on their instagram, but this isn’t their usual territory. They’re more of a polo, old stussy, graphic tee kind of spot. Now I’m wondering if it was too good to be true? There’s no other labeling on the shirt, like wash instruction or anything. Anyone have any pointers on finding out if this is real? Either way I dig the shirt, more curious.