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<p>[QUOTE=&quot;Any Jewelry, post: 4518470, member: 2844&quot;]Lovely, and classic Kordes &amp; Lichtenfels, a good name.</p><p><br /></p><p>As far as I know they made silver, gold and AD jewellery and findings.</p><p>AD (also AMD or Amerik) is short for Amerikaner Doublé, which is thinly gold plated in a gold bath.</p><p>If I am correct, rolled gold is bonded gold under pressure, not plated. I hope I got this right.<img src="styles/default/xenforo/smilies/wink.png" class="mceSmilie" alt=";)" unselectable="on" /></p><p>The name &#039;Amerikaner&#039; is confusing. Gold plating as such is ancient, but the thin Amerikaner Doublé is an Austrian invention. It became hugely popular in the US after the Civil War, when it was difficult and extremely expensive to find gold for jewellery, hence the name.</p><p><br /></p><p>Since the German lands had similar problems during and after several wars, gold plating was very important in German jewellery.</p><p>They devised a system of classifications for different thicknesses of gold plating.</p><p>Since we can all come across German jewellery, here are the German gold plating terms and the millessimal quantity of gold used:</p><p><br /></p><p>Amerikaner Doublé (AD, AMD, Amerik)&nbsp; 10/000 tot 20/000</p><p>Charnier Doublé&nbsp; 20/000 tot 25/000</p><p>Union Doublé&nbsp; 40/000 tot 20/000</p><p><br /></p><p>They are marked, and it looks like a partial AD to me, for Amerikaner Doublé, 10/000 tot 20/000.[/QUOTE]</p><p><br /></p>

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