Richard,
I do trust you!
No doubt about that, I just thought the scoop was closer to windscreen triangle, almost against the frame.
There is a good argument in your favour:
Why the hell "they" did put ID plates on 3 or 4 machines only??
It should be good to identify
1/ Type (sub-type) on which we can find them.
2/ Which assembly plant(or plants eventually) did do it as I would be very surprised to find one on Kuno's - for example.
....
Thinking about that, I have the same subsidiary question - but not in this thread - concerning the Bf109K-4 version!!!!!!!!!!!!!
Best regards, Franck.