Any way to check if original taillights? Possible Dealer fraud

[KSXNSX]

I am probably asking this too late, but I took my car in for service a couple of years ago, and when I got the car back I noticed my center taillight looked a little off. I shrugged it off, but later my dad said the same thing which kind of confirmed something was weird (even though the taillights weren't supposed to be touched for the service).

Is there any way to check for if the taillights or center piece has been swapped out, such as by checking a serial number?

 

[A.S. Motorsport]

All tail lights are identical in shape.
Only difference is colour and logos.

Did they replace gaskets or drain water out of them?
Maybe a simple miss alignment.

the tail-lights come out quite easily.