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<p>[QUOTE="yarm, post: 1714650, member: 5795"]The medal is 4mm thick at the rims but the rims are high and the obverse and reverse faces are closer to 3mm apart. </p><p>The weight is approximately 27 gms which apparently doesn't help!</p><p><br /></p><p>Ed. Well at least that rules out aluminum. (My understanding is that the process used to produce aluminum efficiently wasn't even available in 1883.)[/QUOTE]</p><p><br /></p>
[QUOTE="yarm, post: 1714650, member: 5795"]The medal is 4mm thick at the rims but the rims are high and the obverse and reverse faces are closer to 3mm apart. The weight is approximately 27 gms which apparently doesn't help! Ed. Well at least that rules out aluminum. (My understanding is that the process used to produce aluminum efficiently wasn't even available in 1883.)[/QUOTE]
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