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Looks like burnt paint for patina what do you think?
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<p>[QUOTE="Roerbakmix, post: 4798177, member: 100731"][USER=93416]@EWC3[/USER] classifies it in the same way as I see it. If horn silver is deposited on the coin (e.g. part of a coin hoard where the outer coins degrade), the results are usually fine. In another thread, I just posted the cleaning process of a coin which I suspect was part of a hoard:</p><p><br /></p><p><i>before:</i></p><p>[ATTACH=full]1165135[/ATTACH]</p><p><i>after:</i></p><p>[ATTACH=full]1165136[/ATTACH]</p><p>This one would fit in the first category: the horn silver is <i>upon </i>the coin, and the surface below is smooth. </p><p><br /></p><p>This one however is different:</p><p><i>before:</i></p><p>[ATTACH=full]1165137[/ATTACH]</p><p><i>after:</i></p><p><i>[ATTACH=full]1165138[/ATTACH]</i></p><p>Note that on some places (e.g. on the obverse at 7 o clock; on the reverse ate 9 - 11 o'clock), there is pitting, while on other places (e.g. on obverse at 3-5 'o clock; reverse in the field and legend) the metal is smooth. I expect degradation of the places with pitting, and deposition of the AgCl on the other parts of the coin. </p><p><br /></p><p>Same with this one:</p><p><i>before:</i></p><p>[ATTACH=full]1165139[/ATTACH]</p><p><i>after:</i></p><p>[ATTACH=full]1165140[/ATTACH]</p><p>a pitted obverse, with a very sharp reverse.[/QUOTE]</p><p><br /></p>
[QUOTE="Roerbakmix, post: 4798177, member: 100731"][USER=93416]@EWC3[/USER] classifies it in the same way as I see it. If horn silver is deposited on the coin (e.g. part of a coin hoard where the outer coins degrade), the results are usually fine. In another thread, I just posted the cleaning process of a coin which I suspect was part of a hoard: [I]before:[/I] [ATTACH=full]1165135[/ATTACH] [I]after:[/I] [ATTACH=full]1165136[/ATTACH] This one would fit in the first category: the horn silver is [I]upon [/I]the coin, and the surface below is smooth. This one however is different: [I]before:[/I] [ATTACH=full]1165137[/ATTACH] [I]after: [ATTACH=full]1165138[/ATTACH][/I] Note that on some places (e.g. on the obverse at 7 o clock; on the reverse ate 9 - 11 o'clock), there is pitting, while on other places (e.g. on obverse at 3-5 'o clock; reverse in the field and legend) the metal is smooth. I expect degradation of the places with pitting, and deposition of the AgCl on the other parts of the coin. Same with this one: [I]before:[/I] [ATTACH=full]1165139[/ATTACH] [I]after:[/I] [ATTACH=full]1165140[/ATTACH] a pitted obverse, with a very sharp reverse.[/QUOTE]
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Looks like burnt paint for patina what do you think?
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