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In this Forum we discuss the silver of the United Kingdom, as well as British Colonial silver and Old Sheffield Plate. Past British - Irish Sterling topics/threads worth a look. |
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In this Forum we discuss the silver of the United Kingdom, as well as British Colonial silver and Old Sheffield Plate. Past British - Irish Sterling topics/threads worth a look. |
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| How to Post Photos | Want to be a Moderator? |
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 SMP Silver Salon Forums
 British / Irish Sterling
 Laser hallmarks
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| Author | Topic: Laser hallmarks |
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Scott Martin Forum Master Posts: 11573 |
posted 10-24-2007 12:35 PM
  
Does anyone have any experience with the UK assay offices and their use of lasers instead of dies to apply their hallmarks? Can you tell the difference? See: Laser Marking IP: Logged |
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tmockait Posts: 963 |
posted 11-25-2007 01:00 PM
Scott, Here is a link to London Assay Office web page, which explains their various marking processes, including laser marking. Hope this helps. Tom IP: Logged |
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Scott Martin Forum Master Posts: 11573 |
posted 11-25-2007 01:12 PM
Thanks Tom. I am interested in member's first hand experience with the UK assay offices and/or marks made with lasers instead of dies? Can one tell the difference between struck and lasered marks? IP: Logged |
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argentum1 Posts: 602 |
posted 11-26-2007 07:29 AM
I emailed the assay office yesterday and this morning received a reply. Lyn Mills Secretary to Deputy Warden replies with the following. We do three levels of laser marking, 2D, 3D with light and 3D this is the shallowest to the heaviest. Lyn states that there is no way laser marking could be mistaken for hand hallmarking. IP: Logged |
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vathek Posts: 966 |
posted 11-26-2007 10:25 AM
Although I haven't seen laser hallmarking things that I have seen 'engraved' or executed with laser have been so sharp and precise in appearance as to never be mistaken for hand stamping. It is also far less attractive, even in something like a hallmark. Salvers could also be perfectly engraved with crests, scenes, etc but it will look wrong. IP: Logged |
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swarter Moderator Posts: 2920 |
posted 11-26-2007 11:44 AM
quote:Stamping compresses the metal under the stamp, while (I assume) lasering renmoves metal as does engraving (but not the same way). On thin metal, the punches telegraph their impressions to the other side of the metal and can be seen and felt as raised areas. On thick silver, metal can be raised around the edges of the punch as metal is pushed aside, and if not burnished level can also be felt. I would not expect lasering to show either of these effects. [This message has been edited by swarter (edited 11-26-2007).] IP: Logged |
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