Old Siebe Gorman Diving Helmet Co Dive Bell Sub Dial; submarine, gauge

Description

Presented is an early rare antique
Siebe Gorman Diving Helmet Co Porcelain Dial
from this manufacturing pioneer of diving equipment in good condition as pictured.
Dial signed:
SIEBE GORMAN & CO. LTD. LONDON
Dial is believed to have survived dive bell or submarine service with the Royal Navy stationed in a large marine pressure gauge.
Dial face calibrated with two concentric outer scales marked respectively:
Hourly Rate By One Minutes Observation
Actual Consumption, LITRES.
Three small dials are stationed on lower half of face and inscribed:
1500 METRES,
1500 LITRES,
150 LITRES.
Although we have never seen another example, it is believed this dial may be from a 19thC or early 20thC diving bell due to the type of data calibrations.
Overall dimensions:
8-3/4" Diameter X 3/16" Thick.
Please note: Condition good as found, with just some typical minor fading of some markings as pictured with only a couple of very small chips around the top screw hole; hard to see in photos but worth noting. Porcelain dial is in otherwise choice condition; there are no other chips and remarkably no cracks considering its age.
Provenance: surfaced from an important Antique Diving Memorabilia Collection down under, Brisbane.
Dial could be restored as a gauge or might make an interesting clock face for the enterprising collector.
FAQs
Please email any questions before bidding via eBay's 'Contact Seller' link.
Please review two photos posted as part of auction's description.
Seller will combine shipments where possible to save on shipping costs.
We give a 100% unconditional, 14 day, bid price guarantee if item returned as shipped.
Sorry, we do not give partial refunds.
The Fine Print
Please read; by placing a bid, buyer agrees to the following terms of this transaction:
Buyer prepays order including shipping, insurance.
Buyer charged actual shipping cost plus up to an additional .00 for Packaging and Handling; all items are carefully packed using RECYCLED PRODUCTS where possible to insure safe delivery while reducing shipping cost in an environment friendly way.
Sorry, no local pick-up due to zoning regulations.
Items regularly shipped from 1-3 days following payment clearance to confirmed eBay addresses only.
Buyers with any post auction questions requested to contact us via eBay's 'Contact Seller' link.
Feedback routinely reciprocated following completed transaction. Thanks.
Please check our inventory for
Dive Gear,
Marine Antiques, Cameras, Unique Collectibles, etc.