How can I get serial numbers of my AipPods set in order to check completion of AirPods set?

I used my friend AirPods and forgot it at the airplane. Then I come back to airport and requested

securityAirPods set security service with this question. They found the AirPods and return it back to me. Then I returned the AirPods to my friend and he thought that the AirPods was changed with fake AirPods ears but not the case. So I wold like to check the comletion of the AirPods set by its serial nambers. Is this possible? Case serial: GX***C6L. One AirPod ear serial: GX***C6k. The other AirPod ear serial: GX***C6J. THANKS IN ADVANCE!

[Edited by Moderator]