Sorted it
H - on spine maker mark Horster as per h on Npea charlottenburg dagger lugs.
CH - Charlottenburg Berlin distributor as per Npea daggers.
AW- Achmer Wallenbrock
Luftwaffe airfield from 1936 til 1945 located in the rich hunting forests of Lower Saxony .

http://www.ww2.dk/Airfields%20-%20Germany%20[1937%20Borders].pdf
Well that's my theory anyway.
Dippy🤓