Designation as far as I remember (please correct me if I'm wrong):

 

F.l.t.r.: Forward Observer, Surveying, Tube Arty, Rocket Arty and a pair of (WW II?) Captain collar rank insignia. Please feel free to add your Finnish insignia.

 

 

 

 

Nice ones, you should get the smaller current ones for your collection as well

I believe these are artillery related too, have them ID'ed as Weather Specialist:

Awesome collection!  Yet more varieties I need to try to find.  

8 hours ago, Arkaidiyh said:

Awesome collection!  Yet more varieties I need to try to find.  

Just contact me, I have some extra of these