Helmet Swedish sample of 1921 in excellent condition from personal collection. Until 1940 on the side of the helmet decals were applied - three gold crowns on a blue background. On the liner on the skin was carved numbers and letters - probably the designation of the military unit or personal number of a soldier.
— 10 USD by Russian Post
— 25-40 USD by courier service EMS
— 30-40 USD by Russian Post
— 40-60 USD (depends on customer's country) by courier service EMS
What is the difference between Russian Post and EMS courier service? Read here - link