Strange badge

[stefanob]

Hi,
I've posted this on "Heer/SS war qualification badges" too.

I've bought this photo, last weekend at a local flea market.
It makes me courious not about its rarity, of course (it's an "Album" small picture), but for the badge that Fritz Karl Engel is wearing.
I see it for the first time...does someone know this kind of badge?
Thanks in advance for your help.

Stefano

[Badto666]

Looks like some kind of rally badge like the 1931 SA treffen (but not that one though).