Requesting help authenticating some unusual shoulder boards.

[Douglas]

The first is supposed to be Tropical Panzer.
The second, I have no idea.
The third appears to be a field made board if real.
The fourth a GD artilllery.

I appreciate experienced advice; I am not experienced with boards.

Thank you.

[Peter L]

#2 looks Swedish to me but I am no expert on this.

BR
Peter

[Peter L]

Been surfing around and here is what I think

The #2 strap is Swedish M/52 and the insignia on it are M/39. FO 45 stands for Försvarsområde 45, "Defense area 45". The area is Norrtälje, north of Stocholm. It was active 1942-46



Some pictures for reference

BR
Peter