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Copper diving helmet — auction comparables · Snaplot Comparables
We searched for
“Siebe Gorman copper 12-bolt diving helmet”
(identified as
Siebe Gorman
Standard 12-bolt Deep-Sea Diving Helmet, confidence: High)
Typical realised range (Gemini estimate): £4,000-£8,000
10,000
comparables for
“Copper diving helmet”
· page 1 of 417
· May 2004
A 12-BOLT DIVING HELMET BY SIEBE, GORMAN & CO. LTD
£2,390
est
£2,390
–
—
· May 2004
A 12-BOLT DIVING HELMET BY SIEBE, GORMAN & CO. LTD
£2,390
est
£2,390
–
—
Nautica, Technica & Optic
· Jun 2002
A 12-BOLT COPPER AND BRASS DIVING HELMET BY SIEBE, GORMAN & CO., CIRCA 1910
£4,700
est
£4,700
–
—
· Nov 2006
A SIEBE, GORMAN & CO. LTD 12-BOLT DIVING HELMET AND ACCESSORIES
£4,800
est
£4,800
–
—
· May 1998
A Siebe Gorman & Co 12 bolt diving helmet, circa 1890-1895
£3,163
est
£3,163
–
—
· Jun 2002
A COPPER AND BRASS 12-BOLT DIVING HELMET BY SIEBE, GORMAN & CO LTD, NUMBER 18847
£3,525
est
£3,525
–
—
· Jun 2002
A COPPER AND BRASS 12-BOLT DIVING HELMET BY SIEBE, GORMAN & CO. LTD, NUMBER 19095
£3,290
est
£3,290
–
—
· Jun 2002
A COPPER AND BRASS 12-BOLT DIVING HELMET BY SIEBE, GORMAN & CO LTD, NUMBER 19073
£3,290
est
£3,290
–
—
· Jan 2026
A DISPLAY BRASS AND COPPER TEN BOLT DIVING HELMET BY SIEBE GORMAN
£320
est
£300
–
—
· May 2003
A COPPER AND BRASS 12-BOLT DIVING HELMET BY SIEBE, GORMAN & CO. LTD, NUMBER 19095
£4,113
est
£4,113
–
—
· Nov 2005
A 12-BOLT DIVING HELMET BY SIEBE, GORMAN & CO. LTD., NO 7999
£1,440
est
£1,440
–
—
· Feb 2012
A SIX-BOLT COPPER AND BRASS DIVING HELMET BY SIEBE
£2,900
est
£2,900
–
—
· Feb 2012
A SIX-BOLT COPPER AND BRASS DIVING HELMET BY SIEBE
£2,900
est
£2,900
–
—
· May 1998
A Siebe, Gorman and Company, Ltd 6-bolt diving helmet
£1,725
est
£1,725
–
—
· Feb 2012
A SIX-BOLT COPPER AND BRASS DIVING HELMET BY SIEBE
£2,900
est
£2,900
–
—
· Jun 2002
A SIEBE, GORMAN & CO LTD. 12-BOLT COPPER AND BRASS DIVING HELMET, NO. 17634, CIRCA 1950'S
£2,820
est
£2,820
–
—
· May 2000
A mid-20th Century 12-Bolt diving helmet by Siebe, Gorman & Co. Ltd. (unmatched)
£2,115
est
£2,115
–
—
· Nov 1998
A Siebe, Gorman & Co. 12-bolt diving helmet, circa 1900-1910, numbered 5926 (matching)
£2,185
est
£2,185
–
—
· Jun 2021
An early 20th century two bolt diving helmet marked Siebe Gorman
DKK 3,220
est
DKK 28,000
–
—
· Sept 2021
Attributed to Siebe Gorman, 20th century | 12 Bolt Diver's Helmet
£1,000
est
£1,000
–
—
· Nov 1999
A Siebe Gorman & Coo. Ltd. 12-bolt diving helmet, matching number 13055, circa 1920-1930???
£2,300
est
£2,300
–
—
· Dec 2014
SIEBE GORMAN & CO - Diving suit helmet
€2,500
est
€2,500
–
—
· Dec 2014
SIEBE GORMAN & CO - Diving suit helmet
· Apr 2015
A presentation model Siebe Gorman six bolt diving helmet, 3x3x4.5ins.(7.5x7.5x11.5cm)
£300
est
£300
–
—
· May 2001
A mid-20th Century 12-bolt copper and brass diving helmet by Siebe, Gorman & Co. Ltd, matching number 15052
£2,820
est
£2,820
–
—
· Jun 2025
A six bolt diving helmet, maker Siebe Gorman & Co London. no...
£2,600
est
£3,000
–
—
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Next →
· Jun 2002
A 12-BOLT COPPER AND BRASS DIVING HELMET BY SIEBE, GORMAN & CO., CIRCA 1910
£4,700
est
£4,700
–
—
Nautica, Technica & Optic
· Nov 2006
A SIEBE, GORMAN & CO. LTD 12-BOLT DIVING HELMET AND ACCESSORIES
£4,800
est
£4,800
–
—
Arts & Graphics
· May 1998
A Siebe Gorman & Co 12 bolt diving helmet, circa 1890-1895
£3,163
est
£3,163
–
—
Nautica, Technica & Optic
· Jun 2002
A COPPER AND BRASS 12-BOLT DIVING HELMET BY SIEBE, GORMAN & CO LTD, NUMBER 18847
£3,525
est
£3,525
–
—
Nautica, Technica & Optic
· Jun 2002
A COPPER AND BRASS 12-BOLT DIVING HELMET BY SIEBE, GORMAN & CO. LTD, NUMBER 19095
£3,290
est
£3,290
–
—
Nautica, Technica & Optic
· Jun 2002
A COPPER AND BRASS 12-BOLT DIVING HELMET BY SIEBE, GORMAN & CO LTD, NUMBER 19073
£3,290
est
£3,290
–
—
Nautica, Technica & Optic
· Jan 2026
A DISPLAY BRASS AND COPPER TEN BOLT DIVING HELMET BY SIEBE GORMAN
£320
est
£300
–
—
Nautica, Technica & Optic
· May 2003
A COPPER AND BRASS 12-BOLT DIVING HELMET BY SIEBE, GORMAN & CO. LTD, NUMBER 19095
£4,113
est
£4,113
–
—
Nautica, Technica & Optic
· Nov 2005
A 12-BOLT DIVING HELMET BY SIEBE, GORMAN & CO. LTD., NO 7999
£1,440
est
£1,440
–
—
Nautica, Technica & Optic
· Feb 2012
A SIX-BOLT COPPER AND BRASS DIVING HELMET BY SIEBE
£2,900
est
£2,900
–
—
Jewellery & Gems
· Feb 2012
A SIX-BOLT COPPER AND BRASS DIVING HELMET BY SIEBE
£2,900
est
£2,900
–
—
Jewellery & Gems
· May 1998
A Siebe, Gorman and Company, Ltd 6-bolt diving helmet
£1,725
est
£1,725
–
—
Nautica, Technica & Optic
· Feb 2012
A SIX-BOLT COPPER AND BRASS DIVING HELMET BY SIEBE
£2,900
est
£2,900
–
—
Toys & Collectables
· Jun 2002
A SIEBE, GORMAN & CO LTD. 12-BOLT COPPER AND BRASS DIVING HELMET, NO. 17634, CIRCA 1950'S
£2,820
est
£2,820
–
—
Nautica, Technica & Optic
· May 2000
A mid-20th Century 12-Bolt diving helmet by Siebe, Gorman & Co. Ltd. (unmatched)
£2,115
est
£2,115
–
—
Nautica, Technica & Optic
· Nov 1998
A Siebe, Gorman & Co. 12-bolt diving helmet, circa 1900-1910, numbered 5926 (matching)
£2,185
est
£2,185
–
—
Nautica, Technica & Optic
· Jun 2021
An early 20th century two bolt diving helmet marked Siebe Gorman
DKK 3,220
est
DKK 28,000
–
—
Ethnographical
· Sept 2021
Attributed to Siebe Gorman, 20th century | 12 Bolt Diver's Helmet
£1,000
est
£1,000
–
—
Nautica, Technica & Optic
· Nov 1999
A Siebe Gorman & Coo. Ltd. 12-bolt diving helmet, matching number 13055, circa 1920-1930???
£2,300
est
£2,300
–
—
Nautica, Technica & Optic
€2,500
est
€2,500
–
—
Arts & Graphics
· Apr 2015
A presentation model Siebe Gorman six bolt diving helmet, 3x3x4.5ins.(7.5x7.5x11.5cm)
£300
est
£300
–
—
Arts & Graphics
· May 2001
A mid-20th Century 12-bolt copper and brass diving helmet by Siebe, Gorman & Co. Ltd, matching number 15052
£2,820
est
£2,820
–
—
Nautica, Technica & Optic
· Jun 2025
A six bolt diving helmet, maker Siebe Gorman & Co London. no...
£2,600
est
£3,000
–
—
Nautica, Technica & Optic
Filters
Save search
Comparables
10,000
Median
£224
25–75% range
£75 – £1,064
Overall range
£0 – £66,555,000
Distribution
£0
£3,500
£7,500
£11,500
£15,000
