Good outcome! How strange.
Did the case have the correct serial number on the lug? I would expect if it was completely fake it would not have the serial number matching the genuine movement. If someone has gone to the length to fake the serial number to match a real movement, that's pretty unusual for a rep.
It used to be common for reps to all have the same serial number. The counterfeiters would just copy the serial number markings from the genuine watch they used to design the replica, and then apply it to all of them. There are plenty of replicas which have incremental serials too, but it would be highly unusual for a replica to have a serial number that matched a genuine sourced movement. Most reps will not have genuine movements in them, that's fairly rarely done by owners with second hand movements post purchase.
Sounds like an improvement, haha. The bezel on the real ones is a bit hard to use.
😜