![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
File:Diving helmet, Siebe Gorman & Co. Submarine Engineers London - Marinmuseum, Karlskrona, Sweden - DSC08864.JPG - Wikimedia Commons
![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
![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 Auctioneers): A 6-bolt Admiralty Pattern Diving Helmet by Siebe Gorman & Co, London Bearnes Hampton & Littlewood (Maritime Auctioneers): A 6-bolt Admiralty Pattern Diving Helmet by Siebe Gorman & Co, London](https://www.bhandl.co.uk/sales/assets/SS/2016/06/15/L0028-00.jpg)
Bearnes Hampton & Littlewood (Maritime Auctioneers): A 6-bolt Admiralty Pattern Diving Helmet by Siebe Gorman & Co, London
![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
![1920's Siebe Gorman & Co Ltd Twelve Bolt Diving Helmet & Corselet With Matching Serial Numbers | 541777 | Sellingantiques.com 1920's Siebe Gorman & Co Ltd Twelve Bolt Diving Helmet & Corselet With Matching Serial Numbers | 541777 | Sellingantiques.com](https://www.sellingantiques.com/photosnew/dealer_jclarke/dealer_jclarke_highres_1524665506008-4806951134.jpg)