What a Master peace that song is.      Moving on to the military aspects, I am impressed by the wardrobe got all those Spanish Police hats, I always knew these were worn by Spanish Cops, but thought they were civilian city and town police, and worn you know like British Bobby hats. But the organization is the Guardia Civil and are a para military organization in some respect, like they pull UN Peacekeeping duty, and even were in Afghanistan. Even found that they had some units on Cuba and in Puerto Rico during the Spanish American War.   The hat of course is still worn today.

What other polish items did you find in that collection?  ever interested in selling?

Great find. 

That is very impressive

That is a great fine. I hit estate sales often and have yet to find a big score

Very nice display.  What is the history of the flag with the unit patches? That is very nice.

Great find!

Any info on this is a help.   

Träger des Schellenbaum is wearing an M18, the rest maybe too, can not see to really tell. An unidentified Luftwaffe Band and unit, though it could very well be Regiment  General Göring , but it is in 1936 in Berlin at the Olympics.

Very nice collection, there are some good pieces here.

Hello, or here in English: https://www.amazon.com/dp/B0G651W2PX

As themick said, it's an Austrian helmet with replaced strap.  A desirable helmet IMHO.