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<p>[QUOTE=&quot;topaz-den, post: 730842, member: 21368&quot;]i&#039;ve read some of the toning threads and still have a few questions:</p><p>1. how does one detect AT vs NT?&nbsp; it seems nobody is 100% not even TPG, so is there a sure way? </p><p><br /></p><p>2. if all coins exposed to air will tone to some degree over time, isn&#039;t the coin you are buying/collecting today going to change unpredictably? How many people are keeping their toned coins in airtite holders in controlled environments as opposed to slabs? And won&#039;t this certainly change the TPG grading so a slabbed toned coin may no longer match the grade.</p><p><br /></p><p>It seems you can at best slow down the process but you are basically buying/owning a coin during a portion of it&#039;s lifetime not knowing what&#039;s going to happen to it.&nbsp; Or is past toning an indicator of future toning so once it starts toning you know the path it&#039;s going to take.[/QUOTE]</p><p><br /></p>

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