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<p>[QUOTE=&quot;Henning Walker, post: 1136406, member: 10450&quot;]This belonged to my Great-Grandparents and I believe originates from the 1950s. It was kept in an envelope from &quot;Hamilton &amp; Co Private Ltd. Calcutta &amp; New Delhi&quot; although I am puzzling over what the material actually is!</p><p><br /></p><p>I know that he managed a manganese mine out there and wondered if it could be manganese ore. It is difficult to tell from looking whether it is tarnished metal or stones, but when it catches the light it has quite a sparkle.</p><p><br /></p><p>Any help would be gratefully received![/QUOTE]</p><p><br /></p>

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