Hi Mike!
There is also a Ju88 with the W.Nr. 5725.
Werk numbers were not specific to only one aircraft type. The models themselves were specific, meaning there will be no other Me109 with 5725...no other Ju88 with 5725, no other He111 with 5725, etc.
It would be like buying a Mercedes with a serial number of 5725...and finding a Lamborghini with the same serial....if that makes sense.
...not that I have ever seen a Lamborghini serial...ha!
Mike