One of the most famous helmet designs from World War II is the Mk.II helmet, which was introduced in 1939 and used by British forces throughout the war. The Mk.II helmet was made of steel and had a distinctive dome-shaped design.
In addition to the Mk.II helmet, the British military also used other helmet designs, including the Mk.III helmet, which was similar to the Mk.II helmet but had a slightly different shape, and the Mk.IV helmet, which was made of fiberglass and had a more modern design. These helmet were used by various branches of the British military, including the army, navy, and air force.
British helmets from WWII are a little cheaper than those of WWI according to my research on all completed sales on eBay in the last 90 days. WWII helmets are traded every single day with a minimum of 10 bids, which means there are a great number of engaged buyers and sellers. You can expect to pay anywhere between $50 – $300 for a helmet based on condition & rarity.

If you are looking to buy a British helmet, you will have to join the bidding war. For example, on September 12, 2010, a WWII British helmet was sold for $267.88 with 24 bids. Take a look at the helmet on the right. It is not in great shape but still goes for a high price because of its rarity.
eBay is indeed the best place for searching WWII British helmets for sale from various sellers and collectors. I don’t think there’s any other place like it. Below are some of the listings from eBay. Browse the listing and click on a link which you are interested in. You will be taken to a page with more information on the helmet.
Here is a list of previously sold British helmets on eBay. Use this as a guide so that you don’t pay too much for a helmet in the future.
- Dispatch Rider Helmet 1945 – MINT: $200
- Paratrooper Helmet – REPRODUCTION: $157.50
- Tommy Helmet – 1942 – GOOD: $142.50
- Tommy Helmet – 1942 – GOOD: $79 (notice the difference in price. I checked the auctions and both are almost in the same condition. If you shop, you can still buy the helmets for cheap)
- Motorcycle Helmet – 1945 – GOOD : $112.50