Sweden. Swedish helmet model 1926 or M26.

This model was initially conceived for civil organizations but at the beginning of World War II they were used to equip the Army as they did not have enough helmets. Although Sweden remained neutral, it mobilized the population.

The original color was gray but they were painted green to equip the Army, just as the decals were added in 1940.

The interior and the chinstrap are original.

Swedish helmet from WW2