SOLD! WW2 Danish M23/41 Helmet for a Civil Defence Academy

An unusual WW2 Danish M23/41 Civil Defence Academy "AFT" helmet. 

With matt green paint.

With original light tan leather liner and  chinstrap

Initials written onto the liner

I am unsure on the meaning of the decal, but my best guess is it’s a Civil Defence Academy. 

Approx Size 60-61 - large size.