The helmet was found found at the positions of anti-aircraft gunners, at the Pitomnik airfield. The helmet was found in the early 2000s, and was in the collection all the time. Helmet, smallest size 60.
— 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