Switzerland Helmet Model 46 part 1
This variant is made of a very light material Duralum:
This helmet was not for combat use.
The helmet is shown with typical Swiss reversible camouflage cover.
For the reversed site of the cover see Model 46 part 2 more about Swiss camouflage
More details on http://world-war-helmets.com/fiche?q=Casque-Suisse-Mle-46-DC