![1904. Siebe, Gorman & Co. Ltd. 12-bolt helmet (with a cast brass badge riveted on the breastplate showing the company name) 1904. Siebe, Gorman & Co. Ltd. 12-bolt helmet (with a cast brass badge riveted on the breastplate showing the company name)](https://www.divinghelmet.nl/images/1839-augustus-siebe-2/SG12Ltd1stGJ_000%20web%201.jpg)
1904. Siebe, Gorman & Co. Ltd. 12-bolt helmet (with a cast brass badge riveted on the breastplate showing the company name)
![1904. Siebe, Gorman & Co. Ltd. 12-bolt helmet (with a cast brass badge riveted on the breastplate showing the company name) 1904. Siebe, Gorman & Co. Ltd. 12-bolt helmet (with a cast brass badge riveted on the breastplate showing the company name)](https://www.divinghelmet.nl/images/1839-augustus-siebe-2/SG18601_005%20web.jpg)
1904. Siebe, Gorman & Co. Ltd. 12-bolt helmet (with a cast brass badge riveted on the breastplate showing the company name)
![Bearnes Hampton & Littlewood (Maritime Auctions): 'A 12-bolt Diving Helmet by Siebe Gorman & Co, London Bearnes Hampton & Littlewood (Maritime Auctions): 'A 12-bolt Diving Helmet by Siebe Gorman & Co, London](https://www.bhandl.co.uk/sales/assets/SS/2016/06/15/H0035-00-a-12-bolt-diving-helmet-by-siebe-gorman-co-london.jpg)
Bearnes Hampton & Littlewood (Maritime Auctions): 'A 12-bolt Diving Helmet by Siebe Gorman & Co, London
File:Diving helmet, Siebe Gorman & Co. Submarine Engineers London - Marinmuseum, Karlskrona, Sweden - DSC08864.JPG - Wikimedia Commons
![A Siebe Gorman twelve-bolt copper and brass diving helmet. at Whyte's Auctions | Whyte's - Irish Art & Collectibles A Siebe Gorman twelve-bolt copper and brass diving helmet. at Whyte's Auctions | Whyte's - Irish Art & Collectibles](http://www.whytes.ie/images/archive/20160917/180_1.jpg)
A Siebe Gorman twelve-bolt copper and brass diving helmet. at Whyte's Auctions | Whyte's - Irish Art & Collectibles
![Bearnes Hampton & Littlewood (Maritime Auctioneers): A Tinned 6-bolt Admiralty Pattern Diving Helmet by Siebe Gorman & Co Ltd, London Bearnes Hampton & Littlewood (Maritime Auctioneers): A Tinned 6-bolt Admiralty Pattern Diving Helmet by Siebe Gorman & Co Ltd, London](https://www.bhandl.co.uk/sales/assets/SS/2016/06/15/L0026-00.jpg)
Bearnes Hampton & Littlewood (Maritime Auctioneers): A Tinned 6-bolt Admiralty Pattern Diving Helmet by Siebe Gorman & Co Ltd, London
![FAMOUS SIEBE GORMAN 6 BOLT ADMIRALTY PATTERN DIVE HELMET | Diving helmet, Diving, Marine chronometer FAMOUS SIEBE GORMAN 6 BOLT ADMIRALTY PATTERN DIVE HELMET | Diving helmet, Diving, Marine chronometer](https://i.pinimg.com/736x/67/d1/7e/67d17ed42963f792227a244494b4dcec.jpg)
FAMOUS SIEBE GORMAN 6 BOLT ADMIRALTY PATTERN DIVE HELMET | Diving helmet, Diving, Marine chronometer
![A Siebe Gorman diving suit,Diving helmet made from tin-plated bronze with Siebe Gorman 6 bolt system,on the front window the serial number 15595.The company's nameplate "Siebe,Gorman & Co..." on the collar.With it A Siebe Gorman diving suit,Diving helmet made from tin-plated bronze with Siebe Gorman 6 bolt system,on the front window the serial number 15595.The company's nameplate "Siebe,Gorman & Co..." on the collar.With it](https://c8.alamy.com/comp/D00DER/a-siebe-gorman-diving-suitdiving-helmet-made-from-tin-plated-bronze-D00DER.jpg)