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Half-sovereign Case

Patents & Trademarks Discussion Forum

Half-sovereign Case

Postby Staunton » Mon Dec 05, 2016 9:33 pm

Half Sovereign Case

Hi,

I have a gold half sovereign case that belonged to my great-grandfather.  It has his initials engraved on the front as you will see in the photo.  Inside there are many markings and I know you don't answer questions about trademarks but I really don't know which words that is...

On the inside cover(shown in photo) it says:

TRADE MARK

A.L.D.

Dennison

WATCH CASE CO

4 1 2 6 11

Around the edge of the actual half-sovereign holder it says:

MADE IN ENGLAND. GOLD-CASED. GUARANTEED TO WEAR 20 YEARS

I would like to know if you can tell what karat it is from those numbers and even potential age...

Thanks for your help,

Johanna
Staunton
 
Posts: 41
Joined: Thu Jan 02, 2014 7:16 am

Half-sovereign Case

Postby Ames » Wed Dec 07, 2016 4:10 am

Johanna, thank you for this question. Thank you very much for the photo!

Some time ago I decided not to answer questions which were not in my field of expertise, even when I could provide enough information to lead the questioner to further directions of research.  Why? Even with a statement that I was not qualified to answer the question and what was provided was only a taste of information, some questioners chose to rate me very low on knowledge since a full answer was not provided. The other option is to reject the question totally.  Well, I am going to answer part of your question which is the only part of which I am certain and also provide a tool for you to possibly find more information on the watch and case.   Please keep in mind that my work is the design and actual making of jewelry, working in the metals and gemstones.  I am not an horologist or trader in timepieces.

Apparently the trademark and maker of the case is the A. L. D. Dennison Watch Case Company.   The company has an interesting history, including production of watch cases for export to the USA for use by the Waltham Watch Company.  The maker and serial number of the watch movement itself should be easily seen on the movement plates.  A case designed as it is for the coin is quite interesting.

I am not certain of the numerals and exact meaning of those.

You asked specifically about the case.  “Around the edge of the actual half-sovereign holder it says: MADE IN ENGLAND. GOLD-CASED. GUARANTEED TO WEAR 20 YEARS.”

Johanna, what this describes to me is a rolled gold watch case.  This is the equivalent to the designation “20 year” in American watch cases.  A statement from the company in old advertising said this about another watch case:

“GUARANTEED TO BE MADE OF TWO PLATES OF 10 CT GOLD WITH PLATE OF COMPOSITION BETWEEN AND TO WEAR 20 YEARS”

While the above sentence tells something of rolled gold plate, I will describe just what it actually is.  I imagine you have heard of gold filled as used in jewelry.  Rolled gold plate and that of “20 year” watch cases is a form of gold filled however of much thicker gold layer than in normal gold filled.   Take a US quarter and look at the side of the coin.  You will see a coppery layer in the center of the edge and two shiny whiter layers on either side of the coppery core.  This is a visual hint of the gold filled and rolled gold method.  A layer of karat gold is bonded to a layer of base metal, often brass of some sort. Then this combination is formed into a useful item.  In the case of the watch case, the karat gold is bonded on both sides, as with the quarter coin.  This metal is then stamped to form and assembled into a watch case.   While I have seen some very old and abused rolled gold cases with wear through to the base metal(mostly on edges), the construction with the gold layers is very durable and may well exceed the 20 year assurance.

What is the karat of the gold layer on your watch case?  One way to tell is to have the surface metal tested by a competent jeweler.  I am not saying yours is of the 10kt variety since that quote was only an example of a rolled gold plate by the company making the case.(Note that the sentence in quotes uses CT for karat, not KT.  CT is the abbreviation used in the UK and Dennison was an English company.

A tool you might try and which will likely be quite useful is to post a message on the website of the National Association of Watch and Clock Collectors.   The link is copy and paste:http://mb.nawcc.org

Johanna, best wishes in finding out more about your watch.  I do wish I could help more but watches are not within my expertise, just a tad helpful advice to share here.

God Bless and Peace.   Thomas.
Ames
 
Posts: 54
Joined: Wed Mar 05, 2014 9:10 am

Half-sovereign Case

Postby NicholasCage » Thu Dec 08, 2016 2:28 pm

Half Sovereign Case

Hi,

I have a gold half sovereign case that belonged to my great-grandfather.  It has his initials engraved on the front as you will see in the photo.  Inside there are many markings and I know you don't answer questions about trademarks but I really don't know which words that is...

On the inside cover(shown in photo) it says:

TRADE MARK

A.L.D.

Dennison

WATCH CASE CO

4 1 2 6 11

Around the edge of the actual half-sovereign holder it says:

MADE IN ENGLAND. GOLD-CASED. GUARANTEED TO WEAR 20 YEARS

I would like to know if you can tell what karat it is from those numbers and even potential age...

Thanks for your help,

Johanna
NicholasCage
 
Posts: 42
Joined: Tue Mar 11, 2014 11:28 pm


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