Nation's Attic 2024 Diving Into History

Japanese TOA TSK Antique Diving Helmet

The auction will start in __ days and __ hours

Start price: $500

Estimated price: $1,000 - $2,500

Buyer's premium: 20%

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

This is a seldom-seen classic 3 light 12-bolt helmet made by TOA Sensuiki CO. Ltd. TSK, Minamisenji, Tokyo, Japan. This 3-light 12 bolt model is surprisingly in very good condition, unlike most that turn up on the market. This helmet features a fantastic dark copper and green patina throughout the copper body. The helmet’s original hardware is intact, including the threaded faceplate, 12 wing nuts, 4 brails, window guards, glass, spitcock valve, internal air vents, exhaust chin button, threaded safety pin, and air elbow fitting. The spitcock valve will not move and has some clear material around the nut. The bonnet has a few minor working dents on the top. There is a larger dent behind the diver’s left port. Otherwise, this helmet is an extremely nice TSK!


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.