unknown badge, help needed

[just]

Hi
can you help me for this insignia ? probably german, but...
thanks for answers
cordially
Didier

[Gerdan]

"H D K" could be the abbreviation of a company or organization to identify their material


Gerdan

[Karl-Heinz]

Can be "Haus der Deutschen Kunst.
http://www.hausderdeutschenkunst.de/

Karl-Heinz

[Br. James]

I agree with Karl-Heinz - this could be some sort of employee's identity disc issued to staff of the Haus der Deutschen Kunst in Munich...though I've never seen anything else like it. Very interesting piece; thanks for sharing.

Br. James

[D Funk]

Very interesting piece! Looks to be period.

[just]

Hi Gentlemen
thanks for your help
cordially
Didier