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<p>[QUOTE=&quot;Bronwen, post: 2464846, member: 5833&quot;]Acetic acid dissolves calcium carbonate.&nbsp; In other words, vinegar is not good for nacre.&nbsp; Plain water &amp; a toothbrush may remove the worst if there&#039;s really an incrustation.&nbsp; In the one photo, looks as though the verdigris is on the twisted wire decoration, not on the main body of the mount, so think any other occurrences will be limited.</p><p><br /></p><p>As already noted, marked for 800 silver.&nbsp; I don&#039;t know the additional mark ahead of it.&nbsp; CG?&nbsp; Afraid the crescent shaped mark doesn&#039;t ring any bells either.&nbsp; There are many cameo manufacturers in Naples.</p><p><br /></p><p><br /></p><p><br /></p><p>No, but at least it&#039;s an intact parure &amp; will be very pretty on; the MOP has nice color.</p><p><br /></p><p>&#039;Cameos Factory&#039; may well be the name of the maker.[/QUOTE]</p><p><br /></p>

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