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PVC residue on a NGC slabbed new style owl
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<p>[QUOTE="robinjojo, post: 7781805, member: 110226"]I knew that there were some PVC residue deposits on the obverse of this coin when I bought it. The reverse was PVC deposit free.</p><p><br /></p><p>[ATTACH=full]1335125[/ATTACH] </p><p><br /></p><p>I was somewhat surprised that such obvious deposits got by NGC. So, I cracked open the slab and gave the coin an acetone bath (100% concentration).</p><p><br /></p><p>Now, the deposits appear to be gone. The bath was about 10 minutes long, followed by a rinse with distilled water.</p><p><br /></p><p>ATTICA, Athens, Circa 124/3 BC AR tetradrachm</p><p>(28mm, 16.85 gm)</p><p>New style coinage</p><p>MIKIΩN, EYPYKΛEI and ΣΩKPATHΣ, magistrates. </p><p>Helmeted head of Athena right / owl standing right on overturned amphora, head facing; To right, the Dioscuri standing slightly left; Letter E on amphora, ME below; All within a wreath. </p><p><br /></p><p>Thompson 483</p><p>Good VF with a generally well centered strike.</p><p><br /></p><p>[ATTACH=full]1335132[/ATTACH] </p><p><br /></p><p>I think this coin would not have been slabbed by NGC, had they known about the PVC deposits. </p><p><br /></p><p>Has anyone had similar experiences?[/QUOTE]</p><p><br /></p>
[QUOTE="robinjojo, post: 7781805, member: 110226"]I knew that there were some PVC residue deposits on the obverse of this coin when I bought it. The reverse was PVC deposit free. [ATTACH=full]1335125[/ATTACH] I was somewhat surprised that such obvious deposits got by NGC. So, I cracked open the slab and gave the coin an acetone bath (100% concentration). Now, the deposits appear to be gone. The bath was about 10 minutes long, followed by a rinse with distilled water. ATTICA, Athens, Circa 124/3 BC AR tetradrachm (28mm, 16.85 gm) New style coinage MIKIΩN, EYPYKΛEI and ΣΩKPATHΣ, magistrates. Helmeted head of Athena right / owl standing right on overturned amphora, head facing; To right, the Dioscuri standing slightly left; Letter E on amphora, ME below; All within a wreath. Thompson 483 Good VF with a generally well centered strike. [ATTACH=full]1335132[/ATTACH] I think this coin would not have been slabbed by NGC, had they known about the PVC deposits. Has anyone had similar experiences?[/QUOTE]
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PVC residue on a NGC slabbed new style owl
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