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Nation's Attic 2024 Diving Into History

Danish 2 Bolt Helmet With Crown Stamp Matching Numbers

The auction will start in __ days and __ hours

Start price: $2,500

Estimated price: $6,000 - $10,000

Buyer's premium: 20%

Sales Tax: On the lot's price and buyer's premium

This is one of the most classic yet rarely seen diving helmet models in the world! This is a Danish 2 bolt helmet invented by Peter Hansen over 100 years ago. Hansen came up with this design to enable divers to get in and out of their suits and helmets quickly while working in extremely cold temperatures. The rubber collar on suits would get very stiff when frozen, making a 12 bolt pattern suit a huge hassle! Various countries militaries, including the Danish Royal Navy, and countless commercial divers used this iconic helmet.

This four light configuration features a threaded faceplate which threads on and off with ease and an old gasket is intact. The helmets serial number is 519 with a crown stamp, which is present on both the helmet body and removable brass ring. All of the glass is present, plus the brass guards. There are no major dents or damage visible on the copper body. The two bolts on the breastplate are steel, so possibly replacements. The air fitting has a barbed hose fitting attached. The copper body and brass hardware have a very nice patina, giving this helmet a majestic appearance. Danish 2 bolt helmets do not enter the market often! A wonderful example with lots of character like this is a special find!

All diving helmets in this auction will be accompanied by a certificate of authenticity from Nations Attic. The certificate will have a unique number that will match the number on a tamperproof hologram decal placed inside the helmet. This information will be kept on permanent file at Nations Attic and help ensure the provenance of the helmet and authenticity. The display stand shown in the photos is not included. The option to purchase one after the auction will be provided.

All items will be shipped with a signature required upon delivery and full insurance either via FedEx or the USPS Priority Mail. Worldwide shipping is available; however, no ocean freight will be offered on large items. DHL Express is an option for international shipments under 600 pounds via air. Payment via bank wire for customers outside the USA is required. A shipping quote prior to the auction can be provided by emailing your postal code. International bidders are advised that some countries do not allow the importation of knives. Nations Attic is not responsible for shipping charges going or coming back if your countries customs denies delivery. Rejected items can be consigned into a future sale as there are no refunds.