WWI A-H experimental helmet

[Markgraf]

Helmet and extra armour plate. Designed by http://en.wikipedia.org/wiki/Carl_Hollitzer

 

[Peter_Suciu]

Very interesting. What museum was displaying these helmets?

The top one looks similar to the Hungarian guard helmets used in the inter-war period.

 

[Markgraf]

The HGM in Vienna. An exhibition case with the experimental stuff (the so-called Neuadjustierung) as part of new WWI exhibition.

You mean this helmet?