[mothered]

It's a set of Sony XM4 headphones, and the broken ones are the XM3's. From what I can see there's not really anything on them apart from the model number on the headband, but was just hoping they never checked that instore, and if they did then just say that was exactly what I pulled out the box.

Good move.

They both look very much alike. Is there any visible damage/wear and tear on the broken one?

I've returned about 5 PS5 controllers to the same store with different Serial Numbers on the controller than what's on the box, and had no issues.

That particular store doesn't seem to process returns with care, so It's well-suited to the method you're Intending to use.

What I normally do with In-store SEing, Is attend when they're Inundated with customers - namely late on a Friday just before close of business. As such, they're In a hurry to attend to everyone's needs, thereby tend to rush the return without thoroughly checking It.