Novelty inkwells such as this one modelled as a miniature six-bolt diving helmet and corselet were made by the Siebe Gorman works in Chessington, south-west London, as promotional giveaways or gifts to staff on employment milestones or retirement.

Extracted from Antiques Trade Gazette | Roland Arkell

They are very collectable. This example, made in nickel plate and mounted onto a black-painted mahogany plinth, 5in (13cm) high, was offered at Golding Young & Mawer (20% buyer’s premium) in Lincoln on March 18.

It was estimated at £100-150 but sold to a bidder via thesaleroom.com at £1600.

Siebe Gorman developed diving gear and breathing equipment.