A 6 bolt diving helmet, by Siebe Gorman & Co. of London.

Serial number: 12377

Height: 52 cm.

Width: 38 cm.

Depth: 40 cm.

For more information on Siebe Gorman 6 bolt helmets see: Diving Helmets and Equipment Through The Ages. vol 1. Anthony Pardoe. 2012. pages 32 – 45.

Siebe Gorman & Co, Submarine and General Engineers, Neptune Works, Davis Road, Chessington, and 187 Westminster Bridge Road, London.

Founded by Augustus Siebe in 1819/20, as Siebe & Co.

Exhibited at the 1851 Great Exhibition.

In 1870 William Augustus Gorman became a partner, and the company was renamed as Siebe and Gorman.