B&V Ha139 help

[pbhawkin]

Hi all,
I am after finding out the military registration of the three B&V Ha139Bs.
Looking here at the database:
http://www.luftwaffe-experten.org/d-letters.html
It shows the Civilian registraion numbers and that one (D-ASTA 'Nordstern') was P5+EH (which incidently is not listed in the 'P' section for military planes?
The others are not listed But I know one other had the registration of CB+AM.
Also I know they were involved in the Norwegian campaign but with what Squadron (this one?: E.Stelle Rechlin K.Gr.z.b.V.108)?
Any help appreciated.